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List the major structural and functional differences among the three types of muscle tissue. Skeletal muscle tissue is primarily attached to bones. It is striated and voluntary. Cardiac muscle tissue forms the wall of the heart. It is striated and involuntary. Smooth (visceral) muscle tissue is located in the viscera.
Muscle tissue that surrounds hollow organs and tubes, it is found as single cells or in small groups. Its contraction leads to the propulsion of luminal contents or flow regulation. It is controlled by the autonomic NS and is involuntary. Functions of muscular tissue. Producing body movements, stabilizing body positions, storing & moving ...
Chapter 11: Muscular Tissue. -Stimulation of a muscle cell produces more than a local effect. Local electrical excitation sets off a wave of excitation that travels RAPIDLY from CELL TO CELL and initiates processes leading to contraction. -Muscle cells SHORTEN (CONTRACT) substantially when stimulated.
Figure 15.3.2 15.3. 2: Muscle type 1) Skeletal muscle cells are long tubular cells with striations (3) and multiple nuclei (4). The nuclei are embedded in the cell membrane (5) to be just inside the cell. This type of tissue occurs in the muscles that are attached to the skeleton.
- Muscle Tissue Definition
- Function of Muscle Tissue
- Types of Muscle Tissue
- Quiz
Muscle tissue is a specialized tissue found in animals which functions by contracting, thereby applying forces to different parts of the body. Muscle tissue consists of fibers of muscle cells connected together in sheets and fibers. Together these sheets and fibers and known as muscles, and control the movements of an organisms as well as many othe...
Muscle tissue functions as a single unit, and is often connected to the same nerve bundles. A nerve impulse traveling from the brain or another outside signal tells the muscle to contract. The nerve impulse is transferred almost instantaneously to all the nerve cells in the muscle tissue, and the entire muscle contracts. At the cellular level, each...
Skeletal Muscle Tissue
Skeletal muscle tissue is a type of striated muscle, meaning clear bands can be seen in it under a microscope. This can be seen in image (a) below. These tiny light and dark bands are sarcomeres, highly organized bundles of actin, myosin, and associated proteins. These organized bundles allow striated muscle to contract quickly and release quickly. Muscle tissue is attached to the bones through tendons, which are highly elastic portions of connective tissue. Many muscles may seem to control a...
Cardiac Muscle Tissue
While the striations in skeletal muscle tissue are even and parallel, complex and branching striations are seen in cardiac muscle tissue. Cardiac muscle can be seen in image (c) below. While the striations are hard to see in this image, the branching nature of the cells is easy to pick out. The branching is caused by the connection of cardiac muscle cells to one another. The cells are connected via intercalated discs. These junctures help cardiac muscle to contract as one and provide a rapid...
Smooth Muscle Tissue
Unlike cardiac and skeletal muscle tissue, smooth muscle tissue has no striations. The fibers of myosin and actin in smooth muscle fiber is not nearly as organized as in the other types of muscle tissue. In smooth muscle, the contractions are not quick and rapid but rather smooth and continuous. Smooth muscle is found surrounding many organs, blood vessels, and other vessels used for transporting fluids. The smooth muscle can contract to apply a force on organ. This can be used to move blood...
1. Knowing that actin and myosin are present in muscle cells, a student has a clever idea. If a test for actin and myosin could be developed, cells could quickly be tested to see if they are muscle cells. Will the student’s idea work? A. Yes, great idea! B. No, the test could get contaminated by the user C.No, actin and myosin are in many cells 2. ...
Quiz: Muscle Tissue. Which of the following muscle cells is considered voluntary? If you were examining some cells and observed the presence of intercalated discs, the type of muscle cells you would be looking at would be __________. Our blood vessels are lined with muscles that allow for automatic dilation and constriction based on ...
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Muscle tissue is characterized by properties that allow movement. Muscle cells are excitable; they respond to a stimulus. They are contractile, meaning they can shorten and generate a pulling force. When attached between two movable objects, such as two bones, contraction of the muscles cause the bones to move.
