Somatic Nervous System: involves voluntary responses that are under your control.

Autonomic Nervous System: system that causes reflexes which is the body’s spontaneous response to a stimulus. Involuntary actions from this system.

Parasympathetic and Sympathetic: two systems of the Autonomic Nervous System. Sympathetic system causes a reflex when you are startled, sending a message that causes your heart rate to increase. Parasympathetic System slows body functions during periods of rest to conserve energy.

Sensory neuron: nerve cell that converts external stimuli from the environment to electrical impulses

Interneuron: nerve cell that both receives signals and sends signals to other neurons

Motor Neuron: nerve cell that controls the effector organs, muscles, and glands

Neuromuscular Junction: synapse between a neuron and a muscle, the signal must be sent through this junction to each neuron.

Acetylcholine: chemical that is released by motor neurons to cause muscle contraction ADN activate the muscle

Norepinephrine and Epinephrine: stress response or excitement sent out by the Nervous System, for flight or fight response.

Synapse: another name for the junction between two neurons in which the impulse is sent through.

White Matter: myelinated axons, carry nerve impulses between neurons, gray matter.

Gray Matter: axon terminals, cell bodies, dendrites, and neuroglial cells.

Cerebral Cortex: the outer gray matter layer of the cerebrum that causes complex behavior

Lobes of the Brain: sections of the brain responsible for individual tasks and functions, consist of Frontal Lobe, Paretial Lobe, Occipital Lobe, Temporal Lobe

Limbic System: group of structures deep in the brain that function in expression of emotion