Which Best Describes an Event That Occurs as Part of the Crossed-Extensor

Question

Which best describes an event that occurs as part of the crossed-extensor reflex?
A)It stimulates contraction of the contralateral flexor and inhibits contraction of the contralateral extensor.
B)It stimulates contraction of the contralateral extensor and inhibits contraction of the contralateral flexor.
C)It is initiated by stretch in the ipsilateral extensor muscle.
D)Inhibitory interneurons are activated,which synapse onto contralateral extensor muscles.
E)Monosynaptic excitatory stimulation of ipsilateral extensor muscles occurs.

Accepted Answer

The crossed-extensor reflex involves stimulation of the contralateral extensor muscles and inhibition of the contralateral flexor muscles in response to a painful stimulus on one side of the body. This helps to maintain balance and stability while the affected limb withdraws from the source of pain.