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Human Anatomy > Muscle Tissue > Flashcards

Muscle Tissue Flashcards

1
Q

Single nucleus

A

Smooth muscle

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2
Q

Multiple nuclei

A

skeletal muscle

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3
Q

Visible striations

A

skeletal and cardiac muscle

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4
Q

No visible striations

A

smooth muscle

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5
Q

Voluntary

A

skeletal muscle

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6
Q

Involuntary

A

cardiac and smooth muscle

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7
Q

Muscle tissue has all of the following functions EXCEPT to help us:

A

protects organs like the brain

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8
Q

The term that refers to muscle’s ability to shorten is:

A

contractility

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9
Q

Muscle returns to its original length after stretching, so it is:

A

elastic

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10
Q

Because muscle responds to stimuli, we say it is:

A

excitable

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11
Q

The more movable attachment of a muscle to a bone is the:

A

insertion

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12
Q

The less movable attachment of a muscle to a bone is the:

A

origin

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13
Q

The least common way for a muscle to attach to a bone is through:

A

a direct attachment

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14
Q

Flattened sheets of connective tissue that connect muscles to bones or other muscles are called:

A

aponeuroses

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15
Q

True or False: Muscles are avascular and non-innervated.

A

False

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16
Q

The unit that extends from one Z disc to the next is the:

A

sarcomere

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17
Q

The thick filaments with heads are called

A

myosin

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18
Q

What initiates sliding of the filaments?

A

binding of Ca+2 to actin

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19
Q

What structure in muscle cells stores calcium?

A

sarcoplasmic reticulum

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20
Q

Transverse tubules are extensions of the:

A

sarcolemma

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21
Q

Which of these is part of the sarcoplasmic reticulum?

A

terminal cisterna

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22
Q

What part of a muscle shortens?

A

sarcomeres

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23
Q

True or False: As a muscle contracts, the actin and myosin myofilaments change length.

A

False

24
Q

What causes actin and myosin to move past each other?

A

swiveling of myosin heads

25
Q

Microscopic Structure of Skeletal Muscle Diagram

A

Look at homework on page 2

26
Q

Contract quickly

A

fast glycolytic fibers

27
Q

Contract slowly.

A

slow oxidative fibers

28
Q

Get ATP from aerobic metabolism.

A

slow oxidative fibers

29
Q

Get ATP from anaerobic glycolysis.

A

fast glycolytic fibers

30
Q

Have lots of glycogen.

A

fast glycolytic fibers

31
Q

Have lots of myoglobin.

A

slow oxidative fibers

32
Q

Few capillaries.

A

fast glycolytic fibers

33
Q

Lots of capillaries.

A

slow oxidative fibers

34
Q

Resist fatigue.

A

slow oxidative fibers

35
Q

Fatigue quickly.

A

fast glycolytic fibers

36
Q

Pale in color.

A

fast glycolytic fibers

37
Q

Red in color.

A

slow oxidative fibers

38
Q

Larger diameter.

A

fast glycolytic fibers

39
Q

Smaller diameter.

A

slow oxidative fibers

40
Q

Less powerfull.

A

slow oxidative fibers

41
Q

More powerful.

A

fast glycolytic fibers

42
Q

Rapidly pumping weights

A

fast glycolytic fibers

43
Q

Standing at attention for a long period of time

A

slow oxidative fibers

44
Q

Walking at a moderate pace

A

fast oxidative fibers (intermediate)

45
Q

Connected by intercalated discs

A

cardiac muscle

46
Q

Each cell is innervated

A

skeletal muscle

47
Q

Rhythmically contract without innervation

A

cardiac muscle

48
Q

Located in internal organs and blood

vessels

A

smooth muscle

49
Q

Cells are long cylinders that run length of organ

A

skeletal muscle

50
Q

Cells form a branching network

A

cardiac muscle

51
Q

Often arranged in circular and longitudinal layers

A

smooth muscle

52
Q

Cells are connected by gap junctions

A

cardiac muscle and smooth muscle

53
Q

Condition that occurs when muscle tissue is crushed, causing myoglobin to enter the bloodstream and clog the kidneys, resulting in kidney failure and ultimately heart failure.

A

Rhabdomyolysis

54
Q

A chronic pain disorder of unknown origin with symptoms of severe musculoskeletal pain, fatigue, sleep abnormalities, and headache. Not primarily caused by muscle problems.

A

Fibromyalgia

55
Q

A condition in which tightened bands of muscle twitch, causing pain, when the skin over them is touched.

A

Myofascial pain syndrome

56
Q

Decrease in muscle mass and strength that often occurs with age.

A

Sarcopenia

57
Q

A group of inherited muscle-destroying diseases that generally appear in childhood; one form is due to the absence of the muscle protein dystropin, which links the muscle cytoskeleton to the extracellular matrix.

A

Muscular dystrophy

Human Anatomy (18 decks)

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