Multiple Choice
Which type of muscle tissue is controlled by motor neurons of the somatic nervous system?
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4. Tissues & Histology
Types of Muscle Tissue
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Which characteristic is exhibited by Type I muscle fibers?
A
High endurance and fatigue resistance
B
Fast contraction speed
C
Primarily anaerobic metabolism
D
Low mitochondrial density
Verified step by step guidance1
Understand the characteristics of Type I muscle fibers, which are also known as slow-twitch fibers.
Recognize that Type I muscle fibers are adapted for endurance activities and are resistant to fatigue.
Identify that Type I muscle fibers have a high mitochondrial density, which supports aerobic metabolism.
Note that Type I muscle fibers have a slower contraction speed compared to Type II muscle fibers.
Conclude that Type I muscle fibers primarily rely on aerobic metabolism, not anaerobic, due to their high mitochondrial density.
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