Muscular System
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33 Terms
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1 or 2
how many nuclei in cardiac muscle
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multiple
how many nuclei in skeletal muscle
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1
how many nuclei in smooth muscle
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skeletal
which muscle tissue is voluntary
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branches; striations
description of cardiac muscle
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long cylindrical; striations
description of skeletal muscle
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spindle/ pinched at the ends
description of smooth muscle
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heart
where is cardiac muscle found
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muscles/ bone and skin
where is skeletal muscle found
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hollow organs
where is smooth muscle found
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movement, balance, stabilizing joints, and heat generation
4 skeletal muscle functions
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tendons
what attaches muscle to bone
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... fascicle
a group of muscle fibers is a ...
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... muscle
a group of fascicles are ...
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epimysium
encloses the entire skeletal muscle
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perimysium
encloses a fascicle
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endomysium
encloses a single muscle fiber
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sarcolemma
plasma membrane for a muscle cell
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myofibril
long organelle that fills a muscle cell
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twitch
brief, single muscle contraction
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summing
addition of contractions
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incomplete tetanus
not smooth, very short rests between contraction
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complete tetanus
smooth, no rest between contractions
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32 ATP
how much energy is stored in muscles
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isotonic contraction
what type of muscle contraction: muscles shorten, movement occurs
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isometric contraction
what type of muscle contraction: muscles can't shorten, no movement occurs
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builds endurance, resistance to fatigue
how does aerobic exercise affect the muscles
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changes size and strength
what does isometric exercise do to the muscles
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rigor mortis
"hard death"
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curare
arrowhead poison; used for intubation; causes respitory and cardiac arrest
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myalgia: acute muscle pain
what disorder and type is immediate pain and longer contractions due to deficient blood supply
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myalgia: delayed muscle pain
what disorder and type is after 24-48 hours from which you havn't done an activity in a while and tear muscle cells and fibers causing tissue swelling
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duchenne muscular dystrophy
sex-linked recessive disorder diagnosed at a young age