structural similarities between skeletal muscle and nervous tissue structural similarities between skeletal muscle and nervous tissue

This electrical d. WebMuscle is one of the four primary tissue types of the body, and the body contains three types of muscle tissue: skeletal muscle, cardiac muscle, and smooth muscle ( [link] ). PMC Anterior_and_Posterior_Views_of_Musclesby OpenStax on Wikimedia Commons is used under a CC BY 4.0 (https://creativecommons.org/licenses/by/4.0) license. Optimization of Application-Driven Development of. when a patient suffers from a stroke. Tissue is a group of cells that have similar structure and that function together as a unit. The following list indicates where many smooth muscles are found, along with some of their specific functions. nervous tissue, focusing on prominent, specialized subcellular Webneurons, muscle is an excitable tissue, in that it can conduct or transmit electrical impulses (respond to stimuli). A division of the peripheral nervous system that controls involuntary activities. Astrocytes regulate the chemical environment of the nerve cell, while oligodendrocytes insulate the axon so the electrical nerve impulse is transferred more efficiently. WebStudy Muscle Structure and Function; Axial Muscle flashcards. B. Nossa infraestrutura possui aparelhos top do mercado, oferecendo qualidade nica aos nossos alunos. a A chamber slide (1) fitted, Neurite development and synaptic contact, Neurite development and synaptic contact within 3D collagen-based co-culture constructs. There are three types of muscular tissue: skeletal muscle, cardiac muscle and smooth muscle. Muscles throughout the human body are attached to bones. Where is cardiac muscle found? Tipet_e_kardiomiopativeby Npatchett at English Wikipedia on Wikimedia Commons is used under a CC BY-SA 3.0 (https://creativecommons.org/licenses/by-sa/3.0) license. Smooth_Muscle_Contractionby OpenStax on Wikimedia Commons is used under a CC BY 4.0 (https://creativecommons.org/licenses/by/4.0) license. OpenStax. Creating stem cell-derived neuromuscular junctions in vitro. Why do many skeletal muscles work in pairs? Fold change in mRNA expression levels for genes encoding markers of myotube maturation and post-synaptic membrane development, measured using quantitative RT-PCR. OpenStax College, Animal Primary Tissues. Skeletal muscle cells can contract by the attachment of myosin to actin filaments in the muscle, which then ratchets the actin filaments toward the center of the cells. A fibrous protein that forms (together with actin) the contractile filaments of muscle cells and is also involved in motion in other types of cells. BMC Cell Biol. WebBoth, the neuron and skeletal (heart also) muscle cells generate action potentials i.e. It has a single, centrally located nucleus, as shown in Figure 5.7. Next, we have the Perry in Merriam, which groups accents into facet cools on. https://www.ck12.org/book/ck-12-biology/section/21.3/ (Last modified August 11, 2017.). WebSkeletal muscle is attached to bones and its contraction makes possible locomotion, facial expressions, posture, and other voluntary movements of the body. Generally, an individual who has more slow-twitch fibres is better suited for activities requiring endurance, whereas an individual who has more fast-twitch fibres is better suited for activities requiring short bursts of power. Smooth muscle tissue is also called non-striated as it lacks the banded appearance of skeletal and cardiac muscle. Figure 28.18 Size of uterus throughout pregnancy [digital image]. The sheath of connective tissue surrounding a bundle of muscle fibers. The striation is due to the regular alternation of the contractile proteins actin and myosin, along with the structural proteins that couple the contractile proteins to connective tissues. Skeletal muscle tissue is said to be striated, because it appears striped. What controls the contraction of smooth muscle? 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Figure, http://humanbiology.pressbooks.tru.ca/wp-content/uploads/sites/6/2019/06/Anterior_and_Posterior_Views_of_Muscles-scaled.jpg, Creative Commons Attribution-NonCommercial 4.0 International License, Walls of organs of the gastrointestinal tract (such as the esophagus, stomach, and intestines), moving food through the tract by, Walls of air passages of the respiratory tract (such as the bronchi), controlling the diameter of the passages and the volume of air that can pass through them, Walls of organs of the male and female reproductive tracts; in the uterus, for example, pushing a baby out of the uterus and into the birth canal, Walls of structures of theurinary system, including the urinary bladder, allowing the bladder to expand so it can hold more urine, and then contract as urine is released, Walls ofblood vessels, controlling the diameter of the vessels and thereby affectingbloodflow andblood pressure, Walls of lymphatic vessels, squeezing the fluid called lymph through the vessels, Iris of theeyes, controlling the size of the pupils and thereby the amount of light entering the eyes, Arrector pili in the skin, raising hairs inhairfollicles in thedermis, Dilated (congestive) cardiomyopathy: the left ventricle (the chamber itself) of the heart becomes enlarged and cant pump blood our to the body. Skeletal muscle is under voluntary, somatic nervous system control and is found in the muscles that move bones. -, Beebe F.A., Barkin R.L., Barkin S. A clinical and pharmacologic review of skeletal muscle relaxants for musculoskeletal conditions. Some muscle movement is voluntary, which means it is under conscious control. 2015 Dec;73:23-31. doi: 10.1016/j.biomaterials.2015.09.010. Figure4.18Muscle tissue [digital image]. TED-Ed. It is complex, having a physical and a cognitive component, and it is the result of many contributing factors. G0900762/1/NC3RS_/National Centre for the Replacement, Refinement and Reduction of Animals in Research/United Kingdom, NC/K00087X/1/NC3RS_/National Centre for the Replacement, Refinement and Reduction of Animals in Research/United Kingdom, Akaaboune M., Culican S.M., Turney S.G., Lichtman J.W. Biomaterials. Please enable it to take advantage of the complete set of features! WebSkeletal muscles allow movement by being attached to bones in the body. CK12.org. Smooth muscle cells have a single, centrally-located nucleus and are spindle shaped. Epub 2015 Sep 11. A protein that forms (together with myosin) the contractile filaments of muscle cells, and is also involved in motion in other types of cells. Watch this video to learn more about muscle tissue. WebSimilarities And Differences Between Different Tissue Types Structure of Skeletal Muscle Main muscle structure in detail May 13th, 2018 - Although skeletal muscle cells come in different shapes and sizes the main structure of a skeletal muscle cell remains the same If you were to take one whole muscle and cut So first we have the Andone Yuria that encompasses single nerve fibers and, uh is compared to the end demise, IAM and skeletal muscle. 2022 Dec;28(6):1180-1191. doi: 10.1089/ten.TEB.2021.0204. By weight, an average adult male is about 42% skeletal muscles, and the average adult female is about 36% skeletal muscles. Proportions of fibre types vary considerably from muscle to muscle and from person to person. A bundle of skeletal muscle fibers surrounded by perimysium, a type of connective tissue. Cardiac muscle cells, found only in the heart, are striated and branching (with one nucleus); they are joined by intercalacted discs which allow the cells to synchronize the beating of the heart. Skeletal muscles generate heat as a byproduct of their contraction and thus participate in thermal homeostasis. Sbados 8h s 18h Charbe NB, Tambuwala M, Palakurthi SS, Warokar A, Hromi-Jahjefendi A, Bakshi H, Zacconi F, Mishra V, Khadse S, Aljabali AA, El-Tanani M, Serrano-Aroca , Palakurthi S. Bioeng Transl Med. What happens during a heart attack? WebMuscle tissue can be categorized into skeletal muscle tissue, smooth muscle tissue, and cardiac muscle tissue. Components of connective tissue Types of Cells Its cells contain a great many. Figure10.4Muscle fiber [digital image]. 2015 Oct;21(19-20):2595-604. doi: 10.1089/ten.TEA.2015.0146. Witt R, Weigand A, Boos AM, Cai A, Dippold D, Boccaccini AR, Schubert DW, Hardt M, Lange C, Arkudas A, Horch RE, Beier JP. October 17, 2013. Bookshelf The skeletal system is composed of bones, which provide support and protection to the body. Skeletal muscle tissue is arranged in bundles surrounded by connective tissue. The sarcomere is the basic functional unit of skeletal and cardiac muscles. Cardiac muscle forms the contractile walls of the heart. Attached cells form long, branching cardiac muscle fibers that are, essentially, a mechanical and electrochemical syncytium allowing the cells to synchronize their actions. Types of Muscle Tissue. Effective models of mammalian tissues must allow and encourage physiologically (mimetic) correct interactions between co-cultured cell types in order to produce culture microenvironments as similar as possible to those that would normally occur in vivo. eCollection 2023 Jan. Strickland JB, Davis-Anderson K, Micheva-Viteva S, Twary S, Iyer R, Harris JF, Solomon EA. Skeletal muscle is attached to bones and its contraction makes possible locomotion, facial expressions, posture, and other voluntary movements of the body. Respeitando a individualidade de cada pessoa, os vestirios tambm foram projetados de forma especial para os pequenos. Muscle_Fibers_(small)by OpenStax on Wikimedia Commons is used under a CC BY 4.0 (https://creativecommons.org/licenses/by/4.0) license. WebLooking inside a muscle cell. Cardiomyocyte attach to one another with specialized cell junctions called intercalated discs. Wise, Eddie Johnson, Brandon Poe, Dean H. Kruse, Oksana Korol, Jody E. Johnson, Mark Womble, Peter DeSaix. For example, when the biceps muscle (on the front of the upper arm) contracts, it can cause the elbow joint to flex or bend the arm, as shown in Figure 12.3.4. Epub 2021 Jul 30. Each skeletal muscle consists of hundreds or eventhousands of skeletal muscle fibres, which are long, string-like cells. (https://creativecommons.org/licenses/by-nc/3.0/) license. CNPJ 23.200.031/0001-91 - Praa Japo, 30 - Bairro Boa Vista / CEP 91340-380. The skeletal muscle fibres are bundled together in units called muscle fascicles, whichare surrounded by sheaths of connective tissuecalledperimysium. Which tissue(s) is/are characterized by contractility? To move bones in opposite directions, skeletal muscles often consist of muscle pairs that work in opposition to one another, also called antagonistic muscle pairs. These categories are epithelial, connective, muscle, and nervous. Blood is connective tissues. Connective Tissues Functions of connective tissues Support, protection, storage, transport, binding, movement It holds our bone together to provide physical protection. Contractions of skeletal muscles are voluntary, or under conscious control of the central nervous system via the somatic nervous system. Smooth muscleis muscle tissue in the walls of internal organs and other internal structures such asblood vessels. Biomaterials. A structure where two or more bones of the skeleton come together. One of the four basic types of tissue, connective tissue is found in between other tissues everywhere in the body, including the nervous system and generally forms a framework and support structure for body tissues and organs. It is also called myocardium. 2018 Jun;24(6):346-359. doi: 10.1089/ten.TEC.2018.0062. Segunda a sexta das 06:15 s 20:45 As an Amazon Associate we earn from qualifying purchases. that cover or line muscle tissues. How does the heart resist fatigue? structures and organization of fibers. The OpenStax name, OpenStax logo, OpenStax book covers, OpenStax CNX name, and OpenStax CNX logo Cites owlcation, diffen, and answers. WebInteractions Between the Skeleton, Muscles, and Nerves Move the Body How does the skeleton move? Imagine the man in Figure 12.3.1 turns his eyes in your direction. Differentiate between types of wound debridement www. Structural and Functional Changes in the Coupling of Fascial Tissue, Skeletal Muscle, and Nerves During Aging Aging is a one-way process associated with profound structural and functional changes in the organism. The same bundles-within-bundles structure is replicated within each muscle fibre. Cardiac muscle is found only in the wall of the heart. However, there are some differences in the number and shape of the bones between the two species. What parts of the Webconnective tissues. eCollection 2021 Sep. See this image and copyright information in PMC. FOIA WebMore similarities! Os equipamentos utilizados so da Life Fitness, marca internacionalmente reconhecida por sua qualidade, design ergonmico, tecnologia e funcionalidades. They are both have electrochemical signalling responses which rely on an ion concentration gradient. WebA. Each muscle cell has numerous myofib. Involuntary, striated muscle found only in the walls of the heart; also called myocardium. OpenStax. A hormone is a signaling molecule produced by glands in multicellular organisms that target distant organs to regulate physiology and behavior. Identify Structural Similarities Between Skeletal Muscle And Nervous Tissue, Focusing On Prominent, Specialized Subcellular Structures And Organization Of Preencha seus dados para agendar sua visita e Surpreenda-se. The connective tissues in skeletal muscles have a variety of functions. Anatomy and Physiology questions and answers. 2008;57:705718. Blood is connective tissues. Graptolithina Wikipedia. Relate muscle fibre structure to the functional units of muscles. Tissue Eng Part A. Identify structural similarities between skeletal muscle and nervous tissue, focusing on prominent, specialized subcellular structures and organization of fibers. 2003-2023 Chegg Inc. All rights reserved. Longitudinal slices (30, Gene expression changes in motor neuron-muscle co-cultures. Unauthorized use of these marks is strictly prohibited. WebMuscle and nervous tissues are sometimes called composite tissues because they contain small amounts of areolar tissue along with their own muscle or nerve cells. Skeletal muscle fibers are cylindrical, multinucleated, striated, and under voluntary control. OpenStax. Where is smooth muscle found? If medication is not sufficient to manage symptoms, a pacemaker or even a heart transplant may be the best option. When you read about each type below, you will learn why the three types appear as they do. Smooth muscle tissue contraction is responsible for involuntary movements in the internal organs. The cells of cardiac muscle, known as cardiomyocytes, also appear striated under the microscope. O mais completo centro de bem-estar e sade premium de Porto Alegre! Engineering skeletal muscle tissues with advanced maturity improves synapse formation with human induced pluripotent stem cell-derived motor neurons. Chapter 1 - Nature and Processes of Science. Why is the heart the muscle that performs the greatest amount of physical work in the course of a lifetime? 2003;314:263274. Muscle is the tissue in animals that allows for active movement of the body or materials within the body. The basic functional unit of skeletal and cardiac muscles, containing actin and myosin protein filaments that slide over one another to produce a shortening of the sarcomere resulting in a muscle contraction. Other components of a skeletal muscle fibre include multiple nuclei and mitochondria. Accessibility StatementFor more information contact us atinfo@libretexts.orgor check out our status page at https://status.libretexts.org. If you are redistributing all or part of this book in a print format, Muscles are multicellular contractile units. Disclaimer. F,7IPwg @2>}ZQc^~Q,n&R[Dg9 gVhh~X'+@ On" and transmitted securely. Santoso JW, Li X, Gupta D, Suh GC, Hendricks E, Lin S, Perry S, Ichida JK, Dickman D, McCain ML. (2012). The cells of cardiac muscle tissue are arranged in interconnected networks. This means that A sheath of fibrous elastic tissue surrounding a muscle. -, Ataman B., Ashley J., Gorczyca M., Ramachandran P., Fouquet W., Sigrist S.J., Budnik V. Rapid activity-dependent modifications in synaptic structure and function require bidirectional Wnt signaling. The fast and slow twitch grouping is for skeletal muscle. We dont want you comparing skeletal muscle to cardiac muscle. As shown in Figure 12.3.10, myocardium is enclosed within connective tissues, including the endocardium on the inside of the heart and pericardium on the outside of the heart. The PubMed wordmark and PubMed logo are registered trademarks of the U.S. Department of Health and Human Services (HHS). Figure 5 Triceps and biceps muscles in the upper arm are opposing muscles. Unlike skeletal muscle fibers, cardiomyocytes are single cells typically with a single centrally located nucleus. 2017 Feb 28;18(1):15. doi: 10.1186/s12860-017-0131-2. Queremos que o exerccio fsico faa parte da sua rotina de forma prazerosa e saudvel. Queremos que o exerccio fsico faa parte da sua rotina, de forma prazerosa e saudvel. 1. Both are originated from embryonic mesoderm. Hmmm.. I dont know further than this. C. What But their tissue level of organisations have similarities. The skeletal system is composed of bones, which provide support and protection to the body. skeletal muscle fibres. Except where otherwise noted, textbooks on this site The nucleus of each cell tends to be toward the edge of each cell and the cells are striated. WebStudy Muscle Structure and Function; Axial Muscle flashcards. It stimulates muscle contraction, creates an awareness of the environment, and plays a major role in emotions, memory, and reasoning.To do all these things, cells in nervous tissue need to be able to Cells of smooth muscle tissue are not striated because they lack sarcomeres, but the cells contract in the same basic way as striated muscle cells. Martin NR, Passey SL, Player DJ, Mudera V, Baar K, Greensmith L, Lewis MP. Figure11.5Overview of the muscular system[digital image]. Rapid and reversible effects of activity on acetylcholine receptor density at the neuromuscular junction in vivo. Betts, J. G., Young, K.A., Wise, J.A., Johnson, E., Poe, B., Kruse, D.H., Korol, O., Johnson, J.E., Womble, M., DeSaix, P. (2016, May 18). Which tissue(s) is/are characterized by contractility? Because a muscle can only contract, every joint is controlled by opposing muscles. when a patient. Differentiate between types of (2017, February 14). Clipboard, Search History, and several other advanced features are temporarily unavailable. 1024px-Blausen_0470_HeartWall by BruceBlaus on Wikimedia Commons is used under a CC BY 3.0 (https://creativecommons.org/licenses/by/3.0) license. Alm das salas de aulas especiais e aparelhos de qualidade, oferecemos piscina semi-olmpica no plano aqutico, espaos de convivncia, restaurante e muito mais! A type of skeletal muscle cell that is mainly responsible for anaerobic activities such as weight lifting. C. What parts of the nervous system control each muscle type? Actions which are not under one's conscious control. A INEEX traz para Porto Alegre um novo conceito em academias. Weba. Unlike the muscle fibres of striated muscle tissue, the myocytes of smooth muscle tissue do not have their filaments arranged in sarcomeres. Skeletal muscles are made up of cylindrical fibers which are found in the locomotive system. Contractions of smooth muscle move food through the digestive tracts and push blood through the blood vessels. Gene expression changes in motor neuron-muscle co-cultures. In looking through a microscope how could you distinguish skeletal muscle tissue from smooth muscle? Describe one of its functions. (Micrographs provided by the Regents of University of Michigan Medical School 2012), https://openstax.org/books/anatomy-and-physiology/pages/1-introduction, https://openstax.org/books/anatomy-and-physiology/pages/4-4-muscle-tissue-and-motion, Creative Commons Attribution 4.0 International License, Long cylindrical fiber, striated, many peripherally located nuclei, Voluntary movement, produces heat, protects organs, Attached to bones and around entrance points to body (e.g., mouth, anus), Short, branched, striated, single central nucleus, Short, spindle-shaped, no evident striation, single nucleus in each fiber, Involuntary movement, moves food, involuntary control of respiration, moves secretions, regulates flow of blood in arteries by contraction, Identify the three types of muscle tissue, Compare and contrast the functions of each muscle tissue type, Explain how muscle tissue can enable motion. At its simplest, the neuromuscular junction is a type of synapse where neuronal signals from the brain or spinal cord interact with skeletal muscle fibers, causing them to contract. A soft tissue that composes muscles in animal bodies, and gives rise to muscles' ability to contract. Human Biology by Christine Miller is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License, except where otherwise noted. Think about lobes, nuclei, ganglia, tracts, etc. Science. Structure of Skeletal Muscle Main muscle structure in detail. As shown in Figure 12.3.5 below, skeletal muscle fibres are individually wrapped in connective tissue called endomysium. -, Auluck A., Mudera V., Hunt N.P., Lewis M.P. Expression levels of MYH1 (adult fast isoform), MYH3 (embryonic isoform), and MYH8 (neonatal isoform), as well as troponin T1 and AChR were quantified and expressed relative to levels recorded for 3D constructs without motor neurons at equivalent time points. The membrane enclosing the heart, consisting of an outer fibrous layer and an inner double layer of serous membrane. Nervous tissues are made of cells specialized to receive and transmit electrical impulses from specific areas of the body and to send them to specific locations in the body organized into structures called nerves. Long filaments that run parallel to each other to form muscle (myo) fibers. When smooth muscles contract, they help the organs and vessels carry out their functions. So first we have the Andone Yuria that encompasses single nerve fibers and, uh is compared to the end demise, IAM and skeletal muscle. The structure and function of the cardiac and smooth muscle is much different. Shivering is an involuntary contraction of skeletal muscles in response to perceived lower than normal body temperature. It forms the contractile component of the digestive, urinary, and reproductive systems as well as the airways and arteries. Although the power output of the heart is much less than the maximum power output of some other muscles in the human body, the heart does its work continuously over an entire lifetime without rest. In Anatomy and Physiology (Section 10.8). Jan 27, 2022 OpenStax. Intercalated discs have both anchoring junctions and gap junctions. Instead, they are controlled by the autonomicnervous system, hormones, neurotransmitters, and other physiological factors. This line, an intercalated disc, assists in passing electrical impulses efficiently from one cell to the next while maintaining the strong connection between neighboring cardiac cells, allowing the cardiac muscle cells to synchronize the beating of the heart. Restrictive cardiomyopathy: the myocardium becomes abnormally rigid and inelastic and is unable to expand in between heartbeats to refill with blood. What parts This is normally related to coronary artery disease and/or heart attack. The .gov means its official. Whether you are moving your eyes or running a marathon, you are using skeletal muscles. As the main component of connective tissue, it is the most abundant protein in mammals, making up from 25% to 35% of the whole-body protein content. Describe the structure of a skeletal muscle. For example, a person decides to open a book and read a chapter on anatomy. A complex organic chemical that provides energy to drive many processes in living cells, e.g. As shown in Figure 12.3.6, a muscle fibre consists of a bundle of myofibrils, which are themselves bundles of protein filaments. Other glial cells support the nutritional and waste requirements of the neuron. These protein filaments consist of thin filaments of the protein actin, which are anchored to structures called Z discs, and thick filaments of the protein myosin. Am J Ther. The devised culture system promotes increased myoblast differentiation, forming arrays of parallel, aligned myotubes on which areas of nerve-muscle contact can be detected by immunostaining for pre- and post-synaptic proteins. Identify structural similarities between skeletal muscle OpenStax is part of Rice University, which is a 501(c)(3) nonprofit. OpenStax. WikiJournal of Medicine 1 (2). Frail patients have oxidative stress and elevated proinflammatory cytokines. October 23, 2013. Accessibility OpenStax. WebEffective models of mammalian tissues must allow and encourage physiologically (mimetic) correct interactions between co-cultured cell types in order to produce culture microenvironments as similar as possible to those that would normally occur in vivo. This arrangement allows rapid transmission of electrical impulses, which stimulate virtually simultaneous contractions of the cells. (2014). Skeletal muscleis the most common type of muscle tissue in the human body. https://openstax.org/books/anatomy-and-physiology/pages/11-2-naming-skeletal-muscles. Cardiac muscle is found only in the heart. A double-membrane-bound organelle found in most eukaryotic organisms. Eur J Oral Sci. The heart is the muscle that performs the greatest amount of physical work in the course of a lifetime. Projections from the cell body are either dendrites, specialized in receiving input, or a single axon, specialized in transmitting impulses. It transports O2, waste product. Antagonistic Muscle Pair by Laura Guerin at CK-12 Foundation on Wikimedia Commons is used under a CC BY-NC 3.0(https://creativecommons.org/licenses/by-nc/3.0/) license. Voluntary, striated muscle that is attached to bones of the skeleton and helps the body move. are not subject to the Creative Commons license and may not be reproduced without the prior and express written WebNervous tissues are made of cells specialized to receive and transmit electrical impulses from specific areas of the body and to send them to specific locations in the body. Contractions of smooth muscles are involuntary, so they are not under conscious control. WebSkeletal muscles contain connective tissue, blood vessels, and nerves. Most of the bodys skeletal muscle produces movement by acting on the skeleton. It is highly elastic and present in connective tissue allowing many tissues in the body to resume their shape after stretching or contracting. Sbado das 09:15 s 16:45 the presence or absence of striations or bands, the number and location of nuclei, whether they are myofibrials. Muscle and Nervous tissue. The heart is the muscle that performs the greatest amount of physical work in the course of a lifetime. The bones in both species are connected to each other by joints, which allow for movement. The primary tissue types work together to contribute to the overall health and maintenance of the human body. OpenStax. They Under the light microscope, muscle cells appear striated with many nuclei squeezed along the membranes. Cuidamos dos mnimos detalhes para que nossos alunos tenham ao seu dispor uma infraestrutura impecvel e nica enquanto cuidam da sade. National Library of Medicine Fold change in mRNA expression levels, The effect of motor neuron presence on matrix compaction. After working in a pathology lab for 38 years, I can tell you it would be much easier to explain the differences in muscle and nervous tissue. This is opposed to other components or tissues in muscle such as tendons or perimysium. HHS Vulnerability Disclosure, Help B.Muscle and sensory tissues are considered as an importanttissues. e mechanisms of calcium, actin, and myosin in cardiac muscle should be learned as identical to those of skeletal muscle. It also contains capillaries, nerves, and lymphatics. 12. WebSkeleton: Both cats and humans have a similar skeletal structure. Unlike striated muscle, smooth muscle can sustain very long-term contractions and maintain its contractile function, even when stretched. Figure 12.3.2 shows how the three types of muscle tissues appear under magnification. Smooth muscles are not striated because their cells In Anatomy and Physiology (Section 10.2). This is an important part of digestion. Identify structural similarities between skeletal muscle and Neurite development and synaptic contact within 3D collagen-based co-culture constructs.