MOD A UNIT 4 THEORY

Supporting structure of nerve tissue, located in the CNS, including phagocytic cells; do not transmit impulses.

Functional unit of a nerve that sends and receives nerve impulses (microscopic).

Neurons that transmit nerve impulses to the CNS from within and outside the body.

Space between the end of one neuron and the beginning of the next neuron.

System of nerves that includes the brain and spinal cord.

Middle layer of meninges; resembles a spiderweb.

"Little Brain" connected to the brain stem that controls skeletal muscles for fine motor skills and coordination of voluntary muscle groups.

Larest portion of the brain divided into two hemispheres responsible for thinking, sensation, and voluntary actions.

Twelve pairs of central nerves originating within the brain.

Folds in the cortex; either fissure or sulci.

Gland that controls activities of the pituitary gland; secretes oxytocin and ADH; regulates the autonomic nervous system, body temp, release of hormones, and water balance.

Area of the brain responsible for relaing messages from parts of the body; monitors sensory stimuli.

Nerve fibers extending from the spinal cord; 31 pairs carry motor impulses from the spinal cord toward muscles or glands and organs.

System controlled by the CNS, mainly the cortex, hypothalamus, and medulla; responsible for involunary actions of muscles and glands.

System responsible for the body's response to stress or any perceived emergency situations; "Fight or flight"

Chronic progressive autoimmune disease caused by irritation and degeneration of the myelin sheath, which is then replaced by scar tissue.

Slowly progressive degenerative disorder characterized by resting tremor, pill rolling of the fingers, and shuffling gait caused by muscle weakness and rigidity.

Acute viral inflammation of the dorsal root ganglia, dormant chicken pox.

Neuralgia of the fifth cranial nerve producing excruciating pain of the face.

Paralysis of only one side of the body, often caused by stroke on the opposite side of the brain.

Cranial nerve I, C1, is responsible for what?