comparison of skeletal muscle to other muscle types Flashcards

1
Q

appearance is very large long thin may extend to a foot or more

A

skeletal muscle or striated voluntary

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2
Q

striations stripes due to visible actin and myosin filaments

A

skeletal muscle or striated voluntary

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3
Q

control is conscious// voluntary

A

skeletal muscle striated voluntary

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4
Q

slow twitch/slow oxidative fibers

A

aerobic

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5
Q

thin fibers contract slowly

A

slow twitch slow oxidative fibers aerobic

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6
Q

designed to contract for long periods resistant to fatigue

A

aerobic slow twitch slow oxidabitve fibers

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7
Q

contain myoglobin give them a dark red color and and andvantege at aerobic metabolism

A

slow twitch slow oxidative fibers

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8
Q

fast twitch fast glycolytic fibers

A

anaerobic

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9
Q

thick fibers with powerful contractions contract quickly for speed

A

anaerobic or fast twitch fast glycolytic fibers

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10
Q

lack myoglobin pale or whitish color

A

anaerobic no oxygen or fast twitch fast glycolytic fibers

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11
Q

contract for short periods

A

anaerobic fast twitch fast glycolystic fibers

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12
Q

intermediate fibers

A

fast twich fiber with the endurance of a slow twitch endurance training can cause fast twich to turn into intermediate

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13
Q

cardiac muscle

A

striated involuntary

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14
Q

appearance intermediate length thin branched

A

cardiac muscle /striated involuntary

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15
Q

nuclei hundreds per cell

A

skeletal muscle

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16
Q

nuclei one per cell

17
Q

branched and connected via intercalated discs

18
Q

pacemaker cells stimulate contraction

A

cardiac and visceral

19
Q

control is unconscious involuntary

A

cardiac muscle involuntary

20
Q

smooth muscle

A

nonstriated involuntary

21
Q

appearance small shorter spindle shaped cells

A

smooth muscle nonstriated involuntary

22
Q

lack striations stripes

A

smooth muscle nonstirated involuntary

23
Q

contractons in respose to hormones

A

hormones that effect blood flow or blood pressure smooth muscle

24
Q

histamine

A

causes vasodilation contractin by relaxing smooth muscle in arteries

25
angiotensin
causes vasoconstriction make arteries small
26
adrenalin
causes either vasodilation or vasoconstriction depending upon location in body
27
hormone examples are gastrin or oxytocin
gastrin in stomach contraction help digestion | in oxytocin in uterus causes labor contractions
28
two types of smooth muscle
multiunit and visceral unitary
29
small bundles of cells that contract independently of each other
multiunit
30
found in ciliary muscle and iris of eye in erector pilli of skin large air passageways
multiunit
31
contractions initiated by nervous system
multiunit
32
sheets of cells that contract simultaneously as one unit
visceral unitary
33
uses pacemakers
visceral unitary and cardiac muscle
34
forms wall of many organs digestive urinary reproductive tracts
visceral unitary