VCAA Psychology How does the nervous system enable psychological functioning?

The withdrawal reflex is polysynaptic because it involves one or more interneurons in the spinal cord connecting the sensory neuron to the motor neuron.

A monosynaptic reflex, such as the knee-jerk reflex, involves a direct connection between a sensory neuron and a motor neuron without any interneurons.

Although the response is involuntary, it involves skeletal muscles controlled by the somatic nervous system, not the autonomic sympathetic nervous system.

The parasympathetic nervous system regulates "rest and digest" autonomic functions, whereas this reflex involves skeletal muscle contraction via the somatic nervous system.

Serotonin is primarily a neuromodulator involved in regulating mood, sleep, and appetite, rather than serving as the main transmitter for fast excitatory signaling.

Dopamine is a neuromodulator associated with reward, motivation, and motor control, not the primary neurotransmitter for fast excitatory transmission.

Glutamate is the major excitatory neurotransmitter in the central nervous system, binding to ionotropic receptors to mediate fast synaptic transmission.

Gamma-aminobutyric acid (GABA) is the primary inhibitory neurotransmitter in the brain, functioning to reduce neuronal activity rather than excite it.