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Human Anatomy > Muscle Terms > Flashcards

Muscle Terms Flashcards

1
Q

endomysium

A

wraps individual muscle fibers

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2
Q

perimysium

A

forms fasciculi

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3
Q

epimysium

A

covers entire muscle and continuous with tendon

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4
Q

what are the 4 characteristics of muscles

A

irritability, contractility, extensibility, elasticity

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5
Q

synergists

A

muscles which contract together for movement

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6
Q

antagonists

A

muscles performing opposite functions

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7
Q

parallel arrangement has

A

endurance, little strength

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8
Q

convergent arrangement

A

strength at defined point

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9
Q

sphincteral

A

close an opening

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10
Q

pennate

A

strong, short Burts. tire quickly

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11
Q

sarcolemma

A

cell membrane, skeletal muscle

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12
Q

sarcoplasm

A

cell cytoplasm, skeletal muscle

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13
Q

within the cell is a myofibrils which contains what

A

myofilaments

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14
Q

name two example of proteins found within muscles

A

actin, myosin

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15
Q

actin and myosin are bundled together within what

A

myofilaments

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16
Q

what is the job of the sarcoplasmic reticulum

A

to sequester calcium to be released when contracts

17
Q

sarcomere is a defined length within the what

A

myofibril

18
Q

when muscle contracts, the z-band gets

A

closer

19
Q

isometric contraction

A

doesn’t generate movement. forces are equal

20
Q

isotonic contration

A

generates movement

21
Q

muscles cells are __ cells (shape)

A

cylindrical

22
Q

muscle cells have __ nueromusclear intervention

A

1

23
Q

what are the 4 parts of the Neuromuscular junction (NMJ)

A

motor neuron, synaptic cleft, motor end plate, acetylcholine (neurotransmitter)

24
Q

what’s the name of the neurotransmitter in NMJ

A

acetylcholine

25
Q

motor __ does what to allow receptors to bind to acetylcholine

A

increases the surface area

26
Q

what enzyme breaks down acetylcholine

A

acetylcholinesterase

27
Q

what is the purpose of the motor unit

A

motor neuron and all of the muscle cells it innervate

28
Q

the more controlled muscles movement requires ___ motor units

A

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Human Anatomy (30 decks)

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