Question

in a crossed - extensor reflex, if the right arm was grabbed it would flex and arm would _________.
a) extend
b) adduct
c) also flex
d) abduct
question 7 (1.7 points)

Explanation:

In a crossed - extensor reflex, when one limb (e.g., the right arm) is stimulated (grabbed), it flexes (to withdraw from the stimulus). At the same time, the contralateral (opposite) limb (the left arm in this case, but if we assume the question is about the other arm in a general crossed - extensor reflex context) extends. This is a protective reflex to maintain balance. For example, if you step on a sharp object with your right foot (equivalent to the right arm being grabbed in the arm example), your right leg flexes to lift the foot away, and your left leg extends to support the body weight.

Answer:

A. extend