Nervous System Overview Quiz

Any detectable change in the internal or external environment of an organism.

Specialized cells that detect energy in one form and convert it to electrical energy.

Nerve cells that carry nerve impulses (electrical signals) to initiate a response in an effector (a muscle or gland).

The part of the nervous system that processes information and coordinates a response.

The part of the nervous system that connects the CNS to the rest of the body.

The part of the PNS that controls voluntary movements and receives sensory information.

The part of the PNS that controls involuntary actions, like heartbeat and digestion.

A long fiber that carries nerve impulses away from the cell body of a neuron.

The central region of the spinal cord, containing cell bodies and synapses of neurons.

The outer region of the spinal cord, composed of axons coated in myelin, giving it a white color.

A specialized cell that detects a stimulus and converts it into an electrical signal.

A rapid, involuntary response to a stimulus, often for protection.

A pathway that transmits a reflex, involving a sensory neuron, relay neuron, and motor neuron.