Nervous System

Carries messages toward the brain and spinal cord.

Microscopic fiber that carries the nervous impulse along a nerve cell.

Protective separation between blood and brain cells. Difficult for substances to penetrate capillary walls.

Posterior portion of brain that connects cerebrum to spinal cord.

Part of a nerve cell that contains the nucleus.

The brain and spinal cord.

Posterior part of the brain that coordinates muscle movements and maintains balance.

Outer region of the cerebrum, containing sheets of nerve cells; gray matter of the brain.

circulates throughout the brain and spinal cord.

Largest part of the brain; responsible for voluntary muscular activity, vision, speech, taste, hearing, thought, and memory.

Twelve pairs of nerves that carry messages to and from the brain with regard to the head and neck.

Microscopic branching fiber of a nerve cell that is the first part to receive nervous impulse.

Carries messages away from brain and spinal cord.

Portion of the brain beneath the thalamus; control sleep, appetite, body temperature, and secretions from the pituitary gland.

Part of brain just above the spinal cord; controls breathing, heartbeat, and size of blood vessels.

Three protective membranes surround the brain and spinal cord.

Carries messages away from the brain and spinal cord to muscles and organs.

Macroscopic cord-like collection of fibers that carry electrical impulses.

Nerve cell that carries impulses throughout the body.

Chemical messenger release at the end of a nerve cell. Stimulates or inhibits another cell, can be nerve cell, muscle cell, or gland cell.

Nerves outside the brain and spinal cord: cranial, spinal and autonomic nerves.

Part of the brain anterior to the cerebellum and between the medulla and the rest of the midbrain. A bridge connecting various parts of the brain.

nerve extending from the base of the spine down the thigh, lower leg and the foot. Sciatica is pain or inflammation along the course of the nerve.

carries messages toward the brain and spinal cord from a receptor.

31 pairs nerves arising from the spinal cord.

space through which a nervous impulse travels between nerve cells or between nerve and muscle or glandular cells.

Main relay center of the brain. It conducts impulse between the spinal cord and cerebrum; incoming sensory messages are relayed through the thalamus to appropriate centres in the cerebrum.

10th cranial nerve; its branches reach to the larynx, trachea, bronchi, pons, and aorta, oesophagus and stomach.

canals of the brain that contain CSF.