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Flashcards in Muscle part 2 Deck (6)
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1

A _____ is a motor neuron and all the muscle fibers it innervates

Motor unit

2

Connection of motor nerve fibers and muscle fibers occurs at the myoneural junction or _____ on the surface of the sarcolemma.

motor end-plate

3

Explain Type I muscle fibers

slow twitch
non-fatiguing
red fibers
slow oxidative
aerobic
High in Mitochondria

4

Explain Type IIA muscle fibers

fast twitch
anaerobic/glycolytic
fatigue resistant
pink or light red fibers

5

Explain Type IIB muscle fibers

fast twitch
rapid fatiguing
high force
anaerobic/ glycolytic
White (most pale) fibers

6

Explain Type II D/X muscle fibers

fast twitch
rapid fatiguing
high force
anaerobic/ glycolytic
similar to type IIB
Slower contraction speed