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45 Cards in this Set
- Front
- Back
3 types of muscle tissue
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Skeletal, smooth, cardiac
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Which muscle tissue attachest to bone
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Skeletal
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Is smooth muscle striated or not striated?
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not striated
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Is skeletal muscle striated or not striated?
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striated
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What structure connects muscle to bone
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tendon
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Is caridac muscle voluntary or involuntary
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involuntary
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Which muscle tissue is in most viscera, blood vessels, skin
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smooth
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What is the fibrous sheet of connective tissue that may attacn to bone or the coverings of adjacent muscles?
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aponeuroses
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Is smooth muscle involuntary or voluntary?
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involuntary
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Is cardiac muscle striated or not striated?
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striated
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Which muscle tissue is in the heart wall
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cardiac
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Layer of connective tissue closely surrounding a skeletal muscle?
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epimysium
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Is skeletal muscle voluntary or involuntary
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voluntary
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What makes up a myofibril?
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thick and thin filaments
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basic rod-like unit of a muscle cell, muscle fiber, contractile fiber
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myofibril
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Layer of CT that extends inward from the epimysium, separating the muscle tissue into small sections
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perimysium
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What are the two types of myofilaments>
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thick and thin
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CT layer that surrounds each fascicle (muscle fiber bundle) in skeletal muscle
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endomysium
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What is the think filament composed of?
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actin
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What makes up the bundles of muscle fibers?
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myofibrils
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What is the thick filament composed of?
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myosin
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What is a single motor neuron and all of the muscle fibers controled by it called?
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motor unit
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What are the two twisted portien strands with clobular ends called cross bridges part of?
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thick filament
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What causes a major source of body heat?
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muscles
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If that stimulus exceeds the threshold potential, the nerve or muscle fiber will give a complete response; otherwise, there is no response.
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All or none response
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What is the neurotransmitter for skeletal muscle contraction?
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acetylcholine (ACh)
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What filament consists of double strands of actin twisted into a helix?
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thin filament
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Amount of oxygen needed by the liver cells to use the accumulated lactic acid to produce glucose
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osygen debt
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What are the four types of muscle contraction?
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isotonic, eccentric, concentric, isometric
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Minimal strength required to cause muscle contraction
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threshold stimulus
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When a muscle contracts and changes length
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isotonic
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Continuous state of partial contraction, important for posture
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muscle tone
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When a muscle contracts and it shortens
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concentric
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When a muscle contracts but does not change length
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isometric
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name the two different muscle fiber (twitch)
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slow and fast
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When a muscle contracts but it is lengthening
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eccentric
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Are slow twitch fibers (type I) resistant to fatigue?
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yes
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What color are Fast twitch (type IIb) fibers?
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pink to red
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Do fast twitch glycolictic fibers (type IIa) have a good blood supply?
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no, they are suceptible
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Are fast twitch glycolic muscle fibers (type IIa) resistant to fatigue?
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no, they are suceptible
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Do slow twitch fibers (type I) have a good blood supply?
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yes
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Which neurotransmitter is used for smooth muscle contraction?
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calmodulin
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Are Fast twitcdh (type IIb) muscle fibers reistant to fatighe?
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yes
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What color are slow twitch (type i) fibers
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red
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What color are fast twitch (type IIa) fibers?
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white
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