Intercalated discs, striations and a branched arrangement of cells. Muscle is a soft tissue that is highly specialized for the production of tension which results in the generation of force. Muscle tissue study guide by smf includes 84 questions covering vocabulary, terms and more. Jul 03, 2014 two different types of muscle tissues are recognized. Muscle fibers are composed of functional units called. Muscle tissue consists of fibers of muscle cells connected together in sheets and fibers. It contains large blood vessels, lymphatics and the neurons of the submucosal plexus of meissner. In muscle cells, however, a larger proportion of the cells resources are given over to this function than in other cell types.
Muscle fascicle is surrounded by perimysium sheath of connective tissue. Embryonic connective tissues types histological findings specialized cells histological appearance mesenchyme location under the skin of. Skeletal muscle tissue is arranged in bundles surrounded by connective tissue. Muscle and nervous tissue quiz yakima valley college. Two different types of muscle tissues are recognized. Muscles can be classified by the type of muscle tissue they are composed of. Adipose tissue is a loose connective tissue dominated by adipocytes. The striation is due to the regular alternation of the contractile proteins actin and myosin, along with the structural proteins that couple the contractile. They are contractile, meaning they can shorten and generate a pulling force. Begin epithelial tissue and connective tissue histology is the study of the microscopic anatomy of the cells and extracellular matrix that make up the tissues of the body. These in turn consist of protein myofilaments, the contractile units of the cell. Histology muscular tissue quiz question 15 part a smooth muscle fibers, circular layer skeletal muscle fibers, longitudinal section cardiac muscle fibers, longitudinal section skeletal muscle fibers, cross section smooth muscle fiber.
It is continuous with fascia and other connective tissue wrappings of muscle including the endomysium and perimysium. A tissue consist of two or more types of cells that function together. Four types of bones are long, short, flat, and irregular. What are the differences between muscle tissue and epithelial. Type place function type i dermnis of skin, tendons, ligaments and bone resistance to force, tension and strech type ii hyaline cartilage resistance to press type iii reticulin liver, bone marrow and lymphoid organs structural support and elasticity, internal reticular framework of parenchyma type iv basement membranes. All multicellular organisms arise from totipotent cells. Successful strategies for clinical applications of tissueengineered skeletal muscle must recapitulate the processes that muscle undergoes during either embryonic development or adult regeneration. In addition, slow fibers contain the red pigment myoglobin. The fiber type is mainly collagen, and the dominant cells are fibroblasts. May 06, 2020 a tissue is a functional aggregation of similar cells and their intercellular materials that combine to perform common functions.
Histology of adipose tissue inflammation in dercums disease, obesity and normal weight controls. Skeletal muscle is a classical example of structure determining function. These cells are elongated and can change their shape by becoming shorter. Skeletal muscle is composed of bundles of very long, cylindrical, multinucleated cells that show crossstriations.
Connective tissue histology authorstream presentation. The three types of muscle tissue are skeletal, smooth, and cardiac. On a histology slide of connective tissue, the cells are separated by a large distance from each other. Epithelial tissue covers the whole surface of the body. Cell body nerve fiber is a general term for any neural process extension that emerges from the cell body of a neuron and it consists of an axon and myelin sheath if present in the nervous system there are nerve fibers in cns and pns it may be myelinated andor unmyelinated in cns it is made up of many nerve cell fibers bound. Skeletal muscle is the most abundant tissue in the vertebrate body. A muscle is made up of many fascicles, which are all surrounded by a layer of connective tissue called the epimysium. Classification of connective tissue according the amount of cells, fibers and amorphous ground substance.
A tissue is a group of cells, in close proximity, organized to perform one or more specific functions there are four basic tissue types defined by their morphology and function. Muscle cells, or myocytes, contain myofibrils comprised of actin and myosin myofilaments which slide past each other producing tension that changes the shape of the myocyte. There is a lot of intercellular matrix between the cells. Histology a microscopic study of human body tissues and mitotic cells introduction. Epithelial tissue that occurs on surfaces on the interior of the body is known as endothelium. Histology a microscopic study of human body tissues. Skeletal muscle is an excitable, contractile tissue responsible for maintaining posture and moving the orbits, together with the appendicular and axial skeletons. Each muscle fiber is surrounded by a layer of connective tissue called the endomysium. Histology is the microscopic study of plant and animal tissues. Muscle tissue is characterized by properties that allow movement. Connective tissue mucoid connective tissue loose connective tissues areolar connective tissue adipose tissue reticular connective tissue dense connective. Medical physiologycellular physiologycell junctions and. Click here to add histologyworld web histology quizzes to your favorites so that you can take a histology practice quiz throughout your histology class.
Sep 26, 2018 the first thing to note for this answer is that tissues are collections of cells, all working together for a collective purpose. Although all organisms are composed of at least one cell, we will be concentrating on observing cells and tissues of the human body. Three types of muscle tissue can be distinguished on the basis of morphologic and functional characteristics figure 101 and the structure of each type is adapted to its physiologic role. Skeletal muscle tissue each myofibril has characteristic banding patterns dark and light bands. These cells undergo specialization in order to perform all functions that are necessary to support life.
The first thing to note for this answer is that tissues are collections of cells, all working together for a collective purpose. The endomysium is a connective tissue investment that surrounds. It also forms glands with endocrine and exocrine secretion. Basic histology and connective tissue welcome to web. Epithelial cells are numerous, exist in close apposition to each other, and form specialized junctions to create a barrier between connective tissues and free surfaces. A tissue is a functional aggregation of similar cells and their intercellular materials that combine to perform common functions. The most important specializations improve mitochondrial performance. Muscle tissues will be studied in more detail later on. Muscle tissue can be divided functionally, is it under voluntary or involuntary control.
It is characterized by a rapid turnover, rich innervation and the lack of vascularization. Excitable tissue responds to stimuli through electrical signals. Skeletal, cardiac and smooth muscle all contract using the same mechanism. Pdf histology of adipose tissue inflammation in dercums. Each muscle is a bundle of muscle fibres, each of which is a long multinucleated cell. Quizlet flashcards, activities and games help you improve your grades. The three types of muscle contractility is a fundamental property of cells and the majority of them contain essentially the same contractile machinery as that found in muscle cells. Each fascicle of muscle fibers is wrapped in another connective tissue layer called the perimysium. Using the physical appearance of cells and the matrix that surrounds them, the 10100 trillion cells of the human body can be grouped into just four. Histology muscular tissue quiz question 14 part a which structure is highlighted. This biologywise post explains what exactly specialization is, along with some examples for your better understanding.
Cardiac muscle contracts to propel blood through the circulatory system. Dense irregular connective tissue has more fibers than ground substance. The three types of tissue are skeletal, smooth, and cardiac. What anatomists call loose fasia is mainly loose connective tissue. In standard histological views, the cells look empty because their lipid inclusions dissolve during slide preparation. When attached between two movable objects, in other words, bones, contractions of the muscles cause the bones to move. It attaches to bones and the orbits through tendons. Muscle tissue consists of cells that are highly specialized for the active generation of force for contraction. Name four types of neuroglia in the cns, and list at least four functions of these cells. The cellular unit of the nervous system is the neuron. In addition, specialized epithelial cells function as receptors for special senses smell, taste, hearing, and vision. Answer correct pal histology connective tissue quiz question.
Simple squamous epithelium diffusion and filtration secretes lubricating substances in serosae. Each fascicle is surrounded by a layer of connective tissue called the perimysium. Cell specialization explained with examples biology wise. Together these sheets and fibers and known as muscles, and control the movements of an organisms as well as many other contractile functions. Find, read and cite all the research you need on researchgate. Under the light microscope, muscle cells appear striated with many nuclei squeezed along the membranes. Embryonic connective tissues types histological findings specialized cells histological appearance.
Muscle cells are usually arranged in bundles surrounded. Introduction muscle tissue is composed of cells differentiated for optimal use of the universal cell property termed contractility. An entire skeletal muscle is enclosed within a dense connective tissue layer called the epimysium continuous with the tendon binding it to bone. Muscle tissue study guide by nridha includes 37 questions covering vocabulary, terms and more. Type place function type i dermnis of skin, tendons, ligaments and bone resistance to force, tension and strech type ii hyaline cartilage resistance to press type iii reticulin liver, bone marrow and lymphoid organs structural support and elasticity, internal reticular framework of parenchyma. These muscles are attached to and bring about the movement of the various bones of the skeleton, hence the name skeletal muscles. Practice lab quiz press the down arrow key to get the answer and to go to next slide. In skeletal and cardiac muscle these thick and thin filaments are organised in series into sarcomeres along the length of the muscle cell. Histology muscular tissue quiz question 15 part a smooth muscle fibers, circular layer skeletal muscle fibers, longitudinal section cardiac muscle fibers, longitudinal section skeletal muscle fibers, cross section smooth muscle fiber, longitudinal section skeletal. Identify the specific tissue type that has the following characteristics. It is made up of cells closely packed and ranged in one or more layers. What are the differences between muscle tissue and.
Contractile tissue is able to generate tension of force. Microfilaments and associated proteins together generate the forces necessary for cellu. Moves parts of the body moves things through the body found if it is not in the myocardium and it is involuntary, then it is smooth muscle arrector pili muscles iris of eye muscularis of most of the digestive tract. Epithelial tissue is a highly cellular tissue that overlies body surfaces, lines cavities, and forms glands. Slow muscle tissue contains a more extensive network of capillaries than is typical of fast muscle tissue and so has a dramatically higher oxygen supply. The whole muscle, such as the biceps, is enclosed in a sheath of connective tissue, the epimysium. Answer correct pal histology connective tissue quiz. Examine the torn section under high power and observe that each fiber is composed of smaller units which are bundles of myofibrils each myofibril being 1 2 m in diameter. Dense irregular connective tissue forms the sheaths of nerves and muscles.
Muscle tissue is a specialized tissue found in animals which functions by contracting, thereby applying forces to different parts of the body. A 19yearold male patient and his mother arrive in the emergency room, both suffering with nausea, vomiting, and visual disorders. Tract a bundle of axons nerve fibers within the cns connective tissue is absent 3. The submucosa is composed of a layer of dense, irregular connective tissue. Muscle tissue spindleshaped cells with one nuclei per cell not striated involuntary functions.
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