Interneurons function to connect sensory and motor neurons within the reflex pathway, facilitating the reflex response.

The primary purpose of the crossed extensor reflex is to maintain balance during withdrawal from a painful stimulus by activating the opposite limb.

The spinal cord serves as a relay center for reflexes, allowing for quick responses to stimuli without involving the brain.

The knee-jerk reflex is a monosynaptic reflex, involving a direct connection between a sensory neuron and a motor neuron.

Acetylcholine is the primary neurotransmitter involved in the transmission of signals at the neuromuscular junction, facilitating muscle contraction.

The withdrawal reflex is an example of a polysynaptic reflex, involving multiple synapses and interneurons.

The stretch reflex is responsible for maintaining posture by adjusting muscle tension in response to changes in muscle length.