Term
| There are more than _______ skeletal muscles in the body. |
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| From 40% to 50% of body weight is ______ ______. |
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| ________: connective tissue sheath that envelopes bundles of muscle fibers. |
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Definition
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| Fibrous components may become a tendon or a __________ which is a broad, flat sheet of connective tissue. |
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Definition
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| _______: general term for fibrous connective tissue found under the skin & surrounding many deeper organs, including skeletal muscle & 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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Definition
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| ________: numerous interconnecting quill-like fascicles converge on a common poiknt of attachment. (deltoid) |
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Definition
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| ________ _______: fascicles may be close to parallel in the center but converge to a tendon at one or both ends (brachioradialis) |
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Definition
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Term
| __________ muscles: "sphinceters" circle body tubes or openings (orbicularis oris) |
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Definition
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Term
| _________: point of attachment that moves when muscle contracts. |
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Definition
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Term
| _____ ______ (______): muscles or groups of muscles that directly perform a specific movement. |
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Definition
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Term
| _________: muscles that, when contracting, directly oppose prime movers; relax while prime movers are contracting to produce movement; provide precision & control during contraction of prime movers. |
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Definition
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Term
| structures & systems other than muscles and bones have a role in _____ ____. |
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Definition
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| _______ _______: responsible for determining muscle tone and also regulation & coordination of the amount of pull exerted by individual muscles. |
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Definition
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Term
| Name the 4 systems that all contribute to maintain posture. |
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Definition
Respiratory
digestive
excretory
endocrine |
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Term
| Muscles maintain posture by the property of ______. |
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Definition
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Term
| what are the 3 general functions of muscles. |
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Definition
-movement of the body as a whole, or movement of its parts.
-heat production
-posture |
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Term
_________ (_______): ability to be stimulated.
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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
| muscle cells are called ______ because of their threadlike shape. |
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Definition
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Term
| ________: plasma membrane of muscle fibers containing sarcoplasm. |
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Definition
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Term
| ______: basic contractile unit of muscle fibers. |
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Definition
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Term
| ________: allows electrical impulses traveling along the sarcolemma to move deeper into the cell. |
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Definition
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Term
| _________: triplet of tubules; a t-tubule sandwiched between two sacs of SR. |
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Definition
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Term
| ________ (____): a neurotransmitter released into a synapse, stimulate the receptors, & initiates an impulse in the sarcolemma causing muscle contraction. |
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Definition
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Term
_________ ____ _________
_______ (_____): yields the energy required for muscular contraction. |
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Definition
| hydrolysis of adenosine triphosphate (ATP) |
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Term
| _________ ________:(means "same tension") contraction in which the tone or tension within a muscle remains the same as the length of the muscle changes. |
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Definition
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Term
| _________: muscle shortens as it contracts. |
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Definition
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Term
| _________: muscle lengthens while contracting. |
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Definition
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Term
| _________ ________:(means same length) contraction in which muscle length remains the same while the muscle tension increases. |
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Definition
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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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Definition
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