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29 Cards in this Set
- Front
- Back
Three Types of Muscle Tissues
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Skeletal, Cardiac, & Smooth
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Describe skeletal and smooth muscles cells
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elongated; muscle fiber
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muscle contraction depends on what?
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two kinds of myofilaments
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The longest muscle cell?
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skeletal muscle fibers
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_____________ is package into the skeletal muscles, organs that attach to a cover the bony skeleton.
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Skeletal muscle tissue
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What are the obvious strips you can see on skeletal muscle fibers?
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striations
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how is skeletal muscle controlled?
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voluntary
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skeletal muscle is responsible for what?
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overall body mobility
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It can contract _______ and _______ easily.
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Rapidly & tired
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Where is cardiac muscle tissue found?
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Only The Heart
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Are cardiac muscles striated?
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Yes
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Is cardiac muscle voluntary or involuntary?
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involuntary
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How does cardiac muscle contract?
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at a fairly steady rate set by the hearts pacemaker
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Where is smooth muscle tissue found?
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In the walls of hollow visceral organs
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The role of smooth muscle?
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Force fluid and other substances through internal body channels.
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Does smooth muscle have striations?
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No
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Is smooth muscle voluntary or involuntary control?
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involuntary
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Contractions of smooth muscle are ?
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Smooth and sustained
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The ability to receive and respond to a stimulus, that is, any change in the environment whether inside or outside the body.
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Excitability; Responsiveness; Irritability
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In the case of muscle, the stimulus is usually?
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Chemical
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The ability to shorten forcibly when adequately stimulated.
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Contractility
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The ability to be stretched or extended .
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Extensibility
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The ability of a muscle fiber to recoil and resume its resting length after being stretched
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Elasticity
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Four important functions of muscle
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1.Produces movement
2. maintains posture 3. stabilizes joints 4. generates heat |
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skeletal;
consist of hundreds to thousands of muscle cells, plus connective tissue wrappings, blood vessels, and nerve fibers |
muscle
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discrete bundle of muscle cells, segregated from the rest of the muscle by a connective tissue sheath.
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fascicle
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elongated multinucleate cell; has banded (striated) appearance
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muscle fiber
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rodlike contractile element; occupy most of the muscle cell volume; composed of sarcomeres arranged end to end; appear banded, and bands of adjacent_____ are aligned.
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myofibril
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the contractile unit, composed of myofilaments made up of contractile proteins
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sarcomere
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