What can you reasonably deduce about why the Group Ia afferents conduct faster than the Group II afferents?
A) Group Ia afferents spiral around both nuclear bag and nuclear chain fibers, whereas Group II spiral around only nuclear chain fibers.
B) Group II afferents spiral around both nuclear bag and nuclear chain fibers, whereas Group Ia spiral around only nuclear chain fibers.
C) Group Ia spirals comprise primary endings, whereas Group II spirals comprise secondary endings.
D) Group Ia afferents have larger diameters and are more heavily myelinated than Group II afferents.
E) Group II afferents have larger diameters and are more heavily myelinated than Group Ia afferents.
Correct Answer:
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