Muscular System Flashcards

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1
Q

Fascia

A

Connective tissue surrounds bones and muscles

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2
Q

Epimysium

A

Inner layer of fascia directly surrounds the muscle
(Deep fascia)

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3
Q

Fascicles

A

Largest bundles of fiber in the muscle.
Surrounded by perimysium

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4
Q

Perimysium

A

Tissue that surrounds fascicle

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5
Q

Endomysium

A

Wraps around individual muscle fibers in the fascicle

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6
Q
A
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7
Q

Order of muscle fibers

A

Epimysium
Perimysium
Fascicle
Endomysium
Muscle fiber

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8
Q

Tendon

A

Muscle to bone
*Strain

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9
Q

Glycogen

A

Glucose stored in tissue
The storage form of carbs

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10
Q

Myoglobin

A

Protein based molecule that carries oxygen to muscles

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11
Q

Myofibrils

A

Where muscle contraction occurs
(Actin &myosin)

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12
Q

Myofilaments

A

Inside myofibril
Contains actin & myosin

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13
Q

Actin

A

Thin myofilament produces contraction

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14
Q

Myosin

A

Thick myofilament that produced contraction

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15
Q

Sarcomere

A

The unit that contains actin and myosin where the actual contraction occurs.

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16
Q

Z line

A

Meeting point of each sarcomere

17
Q
A
18
Q

Neuromuscular junction

A

Where nervous system talks to muscle fibers

19
Q

Synapse

A

Small gap between motor neuron and muscle

20
Q

Action potential

A

Nerve impulse from CNS thru PNS into muscle across neuromuscular junction

21
Q

Neurotransmitters

A

Chemical messenger that crosses the synapse between neuron and muscle

22
Q

Acetylcholine

A

Helps with action potential cross the synapse

23
Q

Sliding filament theory

A

The steps of actin (thin) and myosin (thick) slide pass each other to cause contraction.
*shortening the sarcomere

24
Q

Excitation contraction coupling

A

The physiological process of muscle contraction

25
Q

Power stroke

A

Myosin binds to actin pulling together to shorten muscle

26
Q

Adenosine triphosphate
ATP

A

Molecule that is the main form of energy

27
Q

Type 1

A

Slow twitch
Smaller and generate lower force
Last longer