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CPR, A&P > Chap 4 A&P Muscular System > Flashcards

Chap 4 A&P Muscular System Flashcards

1
Q

Two main types of muscles

A

Voluntary and involuntary

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2
Q

Is skeletal muscle striated

A

Yes

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3
Q

Primary functions of the muscular system

A

Support
movement
protection

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4
Q

What is an antagonistic muscle

A

Move in opposite direction

Example
Bicep flexes tricep relaxes

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5
Q

What is endomysium

A

Wraps individual muscle fibers

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6
Q

What is paramesium

A

Wraps bundles of fibers together

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7
Q

What is epimysium and fascia

A

Wrap the entire muscle

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8
Q

What is the portion of muscle with muscle fibers

A

Gaster a.k.a. belly

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9
Q

endomysium, paramecium, epimysium and fascia all extend beyond Gaster of muscle to form the tendon

T or F

A

True

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10
Q

What delivers impulses to muscles to be able to have voluntarily control

A

Neuron

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11
Q

Each Barbara has a set of 4 to 20 right like filaments what are they known as

A

Myofibrils

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12
Q

What is cytoplasm in myofibrils referred to as

A

Sarcoplasm

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13
Q

What is scattered throughout the sarcoplasm that provides ATP

A

Mitochondria

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14
Q

What is a sarcomere

A

Smaller units of myofibrils

They are the functional units of skeletal muscle

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15
Q

The repetition of sarcomeres gift characteristics of striated appearance

True

A

True

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16
Q

What are the 2 myofilaments that a sarcomere is composed of that run parallel to each other

A

Myosin- thick

Actin - thin

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17
Q

When muscle contracts each myosin filament comes in contact with each other

T or F

A

True

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18
Q

Where do my oh send an acting filaments come together

A

Myosin heads

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19
Q

What is myoglobin

A

Reddish molecule that stores oxygen

20
Q

What is cellular respiration

A

The process by which oxygen moves in and out of the cell

21
Q

Why is read muscle often called slow muscle or oxidative muscle

A

Because of the reserve of oxygen supply in myoglobin

22
Q

What is white muscle

A

A.k.a. fast muscle or glycolytic muscle because of the plentiful glycogen present

23
Q

white muscle have very little or no myoglobin

T or F

A

True

24
Q

In white muscle is ATP used up quickly because of little oxygen available for cellular respiration

Y or N

A

Yes

25
Q

white muscle becomes quickly fatigued and more lactic acid buildup

Y or N

A

Yes

26
Q

How is muscle contraction triggered

A

When they receive a nerve impulse called action potential

27
Q

The nerve impulses conducted by neurons a.k.a. nerve cells

T or F

A

T

28
Q

Motor neurons control skeletal muscle

T or F

A

T

29
Q

What is a synapse

A

Small gap where there is functional connection communication between neurons and other cells through chemical reactions

30
Q

What is the Arch

A

Neurotransmitter or acetycholine

31
Q

What is the area where the muscle and the motor neuron connect known as

A

Neuromuscular junction

32
Q

What neurotransmitter is released in the synapse for muscle contraction

A

Acetycholine

33
Q

In all resting cells, what ion concentration is kept low by the process of active transport

A

Sodium

34
Q

Which ion produces electrical activity within the skeletal muscle fibers

A

Sodium

35
Q

Which compound breaks down acetycholine Thus stopping The communication at the neuromuscular junction

A

Acetycholinesterase

36
Q

The muscle is at rest with the end of influx of which ions

A

Sodium and calcium

37
Q

Do facial muscles attached to various bones of the head

A

Yes

38
Q

Do facial muscles attach to the six muscles which move that Eye

A

No

39
Q

What are the eyes stimulated by

A

The 7th cranial nerve

40
Q

The six muscles which are responsible for eye-movement are stimulated by what cranial nerve

A

3rd cranial nerve ( occumulator nerve)

41
Q

The muscle is responsible for pupil dilation is stimulated by which cranial nerve

A

2nd ( optic nerve)

42
Q

Why do we examine the eyes and face muscles

A

We evaluate for stroke and certain toxin exposures

43
Q

What nerve stimulates the diaphragm

A

Phrenic nerve

44
Q

What muscle is responsible for the majority of movement of the chest wall during breathing

A

The diaphragm

45
Q

Which muscles can you inject someone in

A 
Deltoid
Lateral quad ( vastus lateralis)
46
Q

2 primary electrolytes involved in muscle contraction

A

Sodium (Na)
Potassium (K)
calcium (Ca)

47
Q

What is diffusion

A

Movement of molecules in and out of cell

CPR, A&P (11 decks)

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