Term
| Amount of skeletal muscles in the body |
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Definition
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Term
| Amount of body weight is skeletal muscle |
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Definition
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Term
| Connective tissue sheath that envelops bundles of muscle fibers |
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Term
| A broad, flat sheet of connective tissue |
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Term
| General term for fibrous connective tissue found under the skin and surrounding many deeper organs, including skeletal muscle and bone. |
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Term
| Fascicles that radiate out from a small to a wider point of attachment. (pectoral muscles) |
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Term
| Numerous interconnecting quill-like fascicles converge on a common point of attachment (deltoid) |
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Term
| Fascicles may be close to parallel in the center but converge to a tendon at one or both ends. (brachioradialis) |
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Term
| "Sphincters" circle body tubes or openings (orbicularis oris) |
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Term
| Point of attachment that moves when muscles contracts |
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Term
| Muscles or groups of muscles that directly perform a specific function |
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Term
| Muscles that, when contracting, directly oppose prime movers |
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Term
| Structures and systems other than ____________ have a role in maintaining posture |
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Definition
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Term
| Responsible for determining muscle tone and also regulation and coordination of the amount of pull exerted by individual muscles |
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Term
| Respiratory, digestive, excratory and __________ all contribute to maintain posture |
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Term
| Muscles maintain property |
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Definition
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Term
| General functions of the muscular system include: |
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Definition
| Movement, heat production and posture |
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Term
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Definition
| Excitability (irritability) |
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Term
| Ability to contract, or shorten, and produce body movement |
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Definition
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Term
| These are called fibers because of their threadlike shape |
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Term
| Plasma membrane of muscle fibers containing cytoplasm |
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Term
| Basic contractile unit of muscle fibers |
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Definition
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Term
| Allow electrical impulses traveling along the sarcolemma to move deeper into the cell |
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Term
| Triplet of tubules; a T tubule sandwiched between two sacs of SR |
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Term
| A neurotransmitter released into a synapse, stimulate the receptors, and initiates an impulse in the sarcolemma causing muscle contractions |
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Definition
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Term
| Hydrolosis of _____________ yields the energy required for muscular contraction |
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Term
| _______________ means "same tension" |
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Term
| ___________ muscle shortens as it contracts |
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| ___________ muscle lengthens while contracting |
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Term
- Sustains each impulse longer than in skeletal muscle
- Does not run low on ATP or experience fatigue
- Is self stimulating |
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