Spinal+reflex+arc+1

=__**Spinal Reflex Arc.**__=

__**receptor**__- molecule found on the surface of a cell.

__**effector**__- molecule that binds to a protein and alters the activity of the protein.

__**afferent neuron**__- a neuron conducting impulses inwards to the brain or spinal cord.

__**efferent neuron**__- a neuron conducting i = = mpulses outwards from the brain or spinal cord.

__**ganglion**__- is a biological tissue mass, most commonly a mass of nerve cell bodies.

__**grey matter**__- contains neural cell bodies.

__**ventral nerve root**__- type of nerve root that branches off the spinal cord, exits the spinal column, and continues on its path to specific areas of the body.

__**dorsal nerve root**__- is a main bundle of nerve fibers that branches off the spinal cord and goes to other areas of the body. Dorsal nerve roots are responsible for carrying signals of sensation (such as feelings of pain and temperature) from the body to the brain.

__**Spinal nerve**__- which carries motor,sensory, and autonomic signals between the spinal cord and the body.