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Microanatomy > 2. Muscle > Flashcards

2. Muscle Flashcards

1
Q

What type of muscle fiber has high myoglobin, low glycogen and abundant mitochondria?

A

Type I

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2
Q

What is the term that is applied to an increased number of muscle (or other tissue) cells?

A

Hyperplasia

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3
Q

What is the name of the prominent striations in cardiac muscle?

A

Intercalated discs

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4
Q

Conduction of impulses in the cardiac muscle is the responsibility of specialized cardiac muscle fibers called?

A

Purkinje fibers

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5
Q

The thin filament in muscle fibers is known as what?

A

Actin

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6
Q

The connective tissue lining which surrounds an entire muscle is called this?

A

Epimysium

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7
Q

The thick fiber in muscle fibers is what?

A

Myosin

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8
Q

What is the name of the connective tissue layer that surrounds individual fasicles?

A

Perimysium

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9
Q

The light band in striated muscle is called what?

A

I band

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10
Q

What kind of muscle has a centrally located, large, squareish nucleus?

A

Cardiac

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11
Q

What is the connective tissue layer that surrounds individual muscle fibers?

A

Endomysium

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12
Q

The dark band in striated muscle is called what?

A

A band

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13
Q

The dark line in the centre of the H zone is known as what?

A

M line

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14
Q

What type of muscle fiber is also known as SLOW twitch fibers?

A

Type I

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15
Q

What is the endoplasmic reticulum called in muscle?

A

sarcoplasmic reticulum

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16
Q

What cells are capable of differentiating into muscle cells after an injury?

A

Satellite cells

17
Q

During muscle contraction, which bands in skeletal muscle shorten?

A

I bands

18
Q

The term applied to increased size of muscle (or other tissue) is?

A

Hypertropy

19
Q

What is another name for skeletal muscle?

A

Voluntary

20
Q

A unit of contraction which extends from one z line to another z line is called?

A

Sarcomere

21
Q

What does the letter I stand for in the I band of skeletal muscle?

A

Isotropic

22
Q

The pale area in the centre of the A band is called what?

A

H zone

23
Q

What type of muscle fiber is known as FAST twitch?

A

Type II

24
Q

What type of muscle has low myoglobin, high glycogen and few mitochondria?

A

Type II

25
Q

What kind of muscle has numerous, peripheral nuclei?

A

Skeletal muscle

26
Q

During muscle contraction, which bands in skeletal muscle remain constant in length?

A

A bands

27
Q

What type of muscle will not repair itself?

A

Cardiac

28
Q

What type of muscle is always capable of mitosis?

A

Smooth muscle

29
Q

The kind of nucleus that has a single, central, elongated nucleus is what?

A

Smooth

30
Q

4 basic properties of contractile cells

A
  • excitability
  • conductivity
  • contractility (shorten)
  • elasticity (return to original shape)
31
Q

Largest group of contractile cells?

A

Muscle cells

32
Q

Another word for muscle cells

A

Muscle fibers

Microanatomy (16 decks)

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