muscle fiber + contraction basics Flashcards

1
Q

RED, dark muscle color: ↑ mitochondria, myoglobin
↑ oxidative phosphorylation → sustained contraction
called slow twitch

A

type 1 muscle

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2
Q

examples of type 1 muscle

A

calf: soleus

abdominal muscles

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3
Q

↓ red (white) → ↓ mito + myoglobin
anaerobic glycolysis
called fast twitch

A

type 2 muscle

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4
Q

example of type 2 muscle

A

weight training hypertrophies fast twitch muscles

pectoralis major m.

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