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Anatomy/Physiology > Chapter 8 Part 1 > Flashcards

Chapter 8 Part 1 Flashcards

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0
Q

Limited capacity to regenerate

A

Cardiac

Skeletal

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1
Q

Several nuclei per myofiber

A

Skeletal

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2
Q

Striated appearance

A

Cardiac

Skeletal

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3
Q

Parallel arrangement of muscle fibers

A

Skeletal

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4
Q

Cells tapered at each end

A

Smooth

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5
Q

One nucleus per fiber

A

Cardiac

Smooth

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6
Q

Found in the heart

A

Cardiac

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7
Q

Branching arrangement of muscle fibers

A

Cardiac

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8
Q

Appears no striated or smooth

A

Smooth

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9
Q

Voluntary contro

A

Skeletal

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10
Q

Involuntary control

A

Cardiac

Smooth

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11
Q

Located in walls of hollow internal structures

A

Smooth

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12
Q

Functions of the muscles

A

Body movement due to muscles pulling on bones
Movements of substances within the body
Blood within blood vessels
Food, bile, waste within digestive system
Eggs/sperm within reproductive system
Stabilization of body position
Generation of heat by muscle contraction
Regulating organ volume

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13
Q

The CT sheath that surround a fascicle

A

Perimysium

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14
Q

An extension of the CT sheaths to attach the muscle to bone

A

Tendon

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15
Q

The CT that surrounds an entire muscle

A

Epimysium

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16
Q

CT that surrounds each muscle fiber

A

Endomysium

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17
Q

A bundle of muscle fibers

A

Fascicle

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18
Q

Another name for muscle cells

A

Muscle fibers

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19
Q

The functional unit within the muscle fiber

A

Myofibrils

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20
Q

The cytoplasm within the the muscle fiber

A

Actin

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21
Q

Reddish pigment in a muscle fibers that stores oxygen

A

Myoglobin

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22
Q

Brief contractions of all fibers of w motor unit in response to a single stimulus

A

Twitch

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23
Q

Recording of a muscle contraction

A

Myogram

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24
Period between application of a stimulus and start of s contraction
Latent period
25
Active transport of calcium ions back into the SR is occurring
Relaxation period
26
Period when actual shortening is taking place
Contraction period
27
Sustained contraction due to stimulation at a rate of 20-100/seconds
Tetanus
28
More forceful contraction in response to a stimulus that arrives before a muscle has completely relaxed
Summation
29
A brief contraction of all muscle fibers of a motor unit in response to a single stimulus
Twitch
30
Contraction in which the length of the muscle does not change but it's tension increases
Isometric
31
Contraction in which the length of the muscle changes while its tension stays relatively constant
Isotonic
32
Slight, constant contraction during consciousness
Tone
33
Shortens the muscles and causes movement
Isotonic
34
Increases muscle tension but no movement occurs
Isometric
35
Continuous sustained contraction allowing smooth movement
Tetanus
36
Stairstep increase in contraction with repeated stimulation before muscle has completely relaxed
Summation
37
Multinucleated
Skeletal
38
Found in bloods vessels and stomach
Smooth
39
Voluntary
Skeletal
40
Branched with intecalated discs
Cardiac
41
Spindle shaped
Smooth
42
Cylindrical in shape and unbranched
Skeletal
43
Striated
Skeletal Cardiac
44
Involuntary
Smooth Cardiac
45
Found in heart
Cardiac
46
Unstriated
Smooth
47
Usually attached to bones
Skeletal
48
Longest individual cell
Skeletal
49
Nonstriated
Smooth
50
Does the length of actin and myosin filaments change during muscle contraction
No
51
This is essential for maintains posture
Tone
52
The third period of w muscle twitch contraction
Relaxation period
53
These structures in the enlarged bulb of an axon provide energy to make ACH
Mitochondria
54
State of limpness in which muscle tone is lost
Flaccid
55
The cytoplasm of a muscle fiber
Sarcoplasm
56
This tissue is responsible for most of the head production going on in our body
Muscle tissue
57
All the muscle fibers in a ____ must contract or relax together
Motor unit
58
The movement of these ions from outside the sarcolemma to inside causes an action potential to begin to move along
Sodium ions
59
These ions are necessary to trigger muscle contraction
Calcium
60
Dietary supplement that some studies show may result in more lifting power
Creatine
61
The storage form of glucose in our liver and muscles
Glycogen
62
This anaerobic process provides enough energy for 30-40 sec of maximal activity
Glycolysis
63
Connective tissue and that attaches muscle to bone
Tendon
64
The source of energy for muscle contraction
ATP
65
Another name for an action potential
Impulse
66
This is required by mitochondria in the aerobic production of energy for muscle contraction
Oxygen
67
Another name for muscle cells
Muscle fibers
68
The cell membrane of muscle cells
Sarcolemma
69
Alternate light and dark bands running through the sarcoplasm of a muscle cell
Straiated
70
A single nerve fiber and the muscle fibers it supplies
Motor unit
71
A chemical necessary to transfer the nerve impulse to stimulate the cell
Acetocholine (ACH)
72
The time between the application of a stimulus and the actual shortening of the muscle
Latent period
73
Two types of skeletal muscle contractions needed for normal body movements
Isotonic tetanus
74
The connection between a nerve fiber and a muscle fiber
Neuromuscular junction
75
A brief contraction of all muscle fibers of a motor unit in response to a single stimulus
Twitch contraction
76
Most of the Ca2 is found here when a fuscle fiber is relaxed
Sarcoplasmic reticulum
77
A stiffening if the muscles after death due to Ca2 leaking out of the sarcoplasmic reticulum
Rigor Mortis
78
The thick myofilament that has enlarged heads to form cross bridges
Myosin

Anatomy/Physiology (10 decks)

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