Muscle Physiology ML1 Flashcards

1
Q

4 characteristics of skeletal muscle

A

uses atp, striated, voluntary, needs increase of calcium

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2
Q

4 characteristics of cardiac muscle

A

uses atp, involuntary, striated, requires increase calcium

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3
Q

3 characteristics of smooth muscle

A

uses atp, involuntary, increase calcium

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4
Q

Top bottom structure to skeletal muscle

A

whole skeletal muscle, muscle fiber, myofibrils, thick and thin filaments, myosin and actin molecules

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5
Q

What does every myosin molecule have?

A

long heavy chain segment that forms the core filament and 2 globular heads

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6
Q

Sarcomere

A

one unit of repeating thin and thick filaments

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7
Q

Z disc/band

A

where actin in anchored to the sarcomere, seperates sarcomeres

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8
Q

I Band

A

light band, only thin filaments (actin)

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9
Q

A band

A

dark band, overlap of thick and thin filaments

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10
Q

H zone

A

center of the sarcomere where this is no filament overlap, only thick filaments (myosin)

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11
Q

M line

A

supporting proteins that hold thick filaments together in the H zone, middle of the dark filaments

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12
Q

Sarcolemma

A

plasma membrane: has ecf inside

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