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Physiology Exam 2 > Muscle- Part 3 > Flashcards

Muscle- Part 3 Flashcards

1
Q

What is the type of skeletal muscle that is red?

A

Type 1

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2
Q

What type of skeletal muscle is slow contracting and slow fatiguing fibers?

A

Type 1

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3
Q

What type of skeletal muscle has a high concentration of blood capillaries= high oxidative capacity?
Ex: muscle used to maintain posture

A

Type 1

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4
Q

What type of skeletal muscle is intermediate?

A

Type 2a

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5
Q

What type of skeletal muscle is fast contracting and slow fatiguing? (Between red and white)

A

Type 2a

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6
Q

What type of skeletal muscle is used for walking?

A

Type 2a

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7
Q

What type of skeletal muscle that is white?

A

Type 2b

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8
Q

Why is type 2 skeletal muscle called white?

A

High glycogen concentration

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9
Q

What type of skeletal muscle is fast contracting, fast fatiguing fibers?

A

Type 2b

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10
Q

What type of skeletal muscle has a rapid reaction capacity but short duration?

A

Type 2b

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11
Q

What type of skeletal muscle has few mitochondria and capillaries= low oxidative capacity?
Ex: Muscles used for sprinting

A

Type 2b

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12
Q

T/F: Most muscles in the body are a mixture of different muscle fiber types

A

True

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13
Q

What can happen to muscle fibers as a result of training?

A

Type 2b to Type 2a

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14
Q

What is the group of neuronal cell bodies of all motor units from a single muscle?

A

Motor neuron pool

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15
Q

What is an Alfa motor neuron and all the skeletal muscle fibers it innervate?

A

Motor unit

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16
Q

What are the 2 ways contraction strength can be changed by?

A

Motor unit summation
Wave summation

17
Q

What is stimulation of a large number of motor unit?

A

Motor units summation

18
Q

What is the increase in the frequency of activation of a motor unit?

A

Wave summation

19
Q

To adult muscle force, what 2 processes work together?

A

Motor unit summation and Wave summation

20
Q

What is the name for after a stimulus causes a contraction, then relaxation?

A

Twitch

21
Q

What is it called when 2 stimuli happen in close succession?

A

Summation- results in stronger twitch

22
Q

What happens when there are so many stimuli that the muscle isn’t able to relax after contractions?

A

Tetanic contraction

23
Q

Whats its called when the contractions get stronger and stronger from a stimuli that’s power stays the same?

A

Treppe or Staircase

24
Q

What is it called when individual contractions are fused and cannot be distinguished from each other?

A

Tetany

Physiology Exam 2 (14 decks)

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