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Anatomy & Physiology > MUSCULAR SYSTEM UNIT 7 > Flashcards

MUSCULAR SYSTEM UNIT 7 Flashcards

1
Q

Functions are..

A
  1. Movement
  2. Helps to stabilize joints
  3. Maintains your posture
  4. Generates heat, helps maintain body temp.
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2
Q

Sk. M Location:

A

attach to bone

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3
Q

Sk. M Appearance:

A

Striated, multinucleated

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4
Q

Sk. M Stimulation:

A

Voluntary

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5
Q

Sk. M Rhythm:

A

Fast to slow

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6
Q

C. M Appearance:

A

Striated, one nucleus, intercalated discs

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7
Q

C. M Stimulation:

A

Involuntary

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8
Q

C. M Rhythm:

A

Steady

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9
Q

Sm. M Location:

A

Visceral organs

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10
Q

Sm. M Appearance:

A

Not striated

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11
Q

Sm. M Stimulation:

A

Involuntary

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12
Q

Sm. M Rhythm:

A

Slowest

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13
Q

Muscle cells =

A

Muscle fibers

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14
Q

Epimysum

A

Connective tissue membrane surrounding the entire muscle.

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15
Q

Fascicle:

A

A bundle of muscle fibers

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16
Q

Perimysum:

A

Connective tissue membrane surrounding a faciculus

17
Q

Endomysum:

A

Membrane surrounding each individual muscle fiber

18
Q

Origin:

A

Attaches to the bone that it does not move
Can have 2 or 3 tendons

19
Q

Insertion:

A

Tendon that attaches to the bone it moves

20
Q

I Band:

A

Light band
Contains only thin (actin) filaments

21
Q

H Zone:

A

Contains only thick filaments

22
Q

A Band:

A

Dark band
Contains the entire length of a thick (myosin) filament

23
Q

Z Line:

A

Boundary between sarcomers

24
Q

Myosin:

A

Thick filament
Has ‘heads’ to bind to actin

25
Q

M Line:

A

“Middle line”
Holds together the myosin myofilaments

26
Q

Actin:

A

Thin myofilament
“Two strands of pearls”

27
Q

Neuromuscular Junction:

A

Where a nerve meets a muscle

28
Q

Excitability

A

The ability of a muscle cell to receive a stimulus

29
Q

Axon

A

Delivers a stimulus

30
Q

Motor Neuron

A

The neuron that stimulates a muscle

31
Q

Motor Unit:

A

A motor neuron and all the muscle fibers it stimulates

32
Q

Synaptic Vesicles

A

Contain neurotransmitters —- ACH, Aceity Chloline

33
Q

Neurotransmitters

A

Releases the ACH into the synoptic cleff

34
Q

Synaptic Cleff

A

The minute gap between the axon terminal and the muscle cell

Anatomy & Physiology (12 decks)

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