Reflex arc

Definition

A reflex arc is a neural pathway that controls an automatic response to a stimulus without conscious thought. It involves the transmission of signals from sensory receptors to the spinal cord and then back to muscles or glands, enabling quick reactions to certain stimuli.

Related terms

Sensory Neurons: These are nerve cells that transmit sensory information (sight, sound, feeling, etc.) towards the central nervous system.

Motor Neurons:

Nerve cells that carry action potentials away from the central nervous system to effectors such as muscles or glands, leading to movement or secretion.

Homeostasis:

The process by which an organism's internal environment is kept stable in response to changes in external conditions