A sensory receptor that is specialized to detect stimuli and respond by producing an electrical discharge.

A cylinder of nervous tissue extending from the base of the brain down the back. It 

transmits messages to and from the brain, and controls spinal reflexes. 

A part of the peripheral nervous system associated with the voluntary control of 

body movements via skeletal muscles.

The propagation of action potentials along myelinated axons from one node of Ranvier to the next. 

A part of the hindbrain that coordinates body movements, posture, and balance

Any physical or chemical change in the environment capable of provoking a response in an organism. 

The portion of the nervous system that comprises of the brain and spinal cord. 

A potential difference produced across the plasma membrane of nerve or muscle cells when they are stimulated. 

A nerve cell, made up of a cell body, dendrites, and an axon.

The long extension of a nerve cell that conducts electrical impulses away from the cell body.

Glial cell which forms the fatty sheath around myelinated nerve fibers.

A portion of the peripheral nervous system. It controls visceral functions, for example heart rate, digestion and respiration rate. 

The junction between two neurons or between a neuron and an effector. 

Specialized cells that support and protect neurons. 

The gaps occurring at intervals along the myelin sheath. 

The reduction or neutralization in electrical potential difference across a membrane.

Specialized nerve cells that detect stimuli and respond by producing an electrical discharge. 

An organ containing sensory neurons that is able to respond to external stimuli by sending nerve impulses to the brain. 

The control center for the body, consisting of billions of interconnected neurons. 

The physiological reception of chemical stimuli. 

Neuron with axons sheathed within a lipid and protein rich substance called myelin.

The part of the nervous system that comprises all the nerves and sensory receptors outside of the central nervous system. 

A nerve cell that carries impulses away from the central nervous system to an effector muscle. May be non-myelinated or myelinated. 

The largest region of the brain. It controls and integrates motor, sensory, and higher mental functions (e.g reason and emotion). 

The reception, interpretation, and coordination of inputs from many sources by a 

neuron. 

Thin processes from the neuron cell body that receive stimuli.