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21 Cards in this Set

  • Front
  • Back
The direction of neuronal impulse from the body toward the central nervous system (CNS).
Self-controlling or involuntary.
Autonomic nervous system (ANS)
Division of the nervous system that controls the involuntary body functions; consists of sympathetic and parasympathetic divisions.
The part of a nerve cell that conducts impulses away from a cell body.
Blood-brain barrier
A barrier formed by special characteristics of capillaries to prevent certain chemicals from moving to the brain.
Cell body
The main part of a neuron from which axons and dendrites extend.
Central nervous system (CNS)
Brain and spinal cord.
Cerebrospinal fluid (CSF)
A fluid that fills the ventricles of the brain and also lies in the space between the arachnoid layer of the meninges and the brain or spinal cord.
The neck region.
The part of a neuron that branches out to bring impulses to the cell body.
The conduction of electrical impulses away from the CNS to the body.
The equilibrium pertaining to the balance of the body with respect to fluid levels, pH level, and chamicals.
The region of the back that includes the area between the ribs and the pelvis: the area around the waist.
Monoamine oxidase (MAO)
An enzyme (includes MAO-A and MAO-B) found in the nerve terminals, the neurons, and liver cells; inactivates chemicals such as tyramine, catecholamines, serotonin, and certain medications.
Nerve terminal
The end portion of the neuron where nerve impulses cause chemical to be released; these cross a small space, called a synaptic cleft, to carry the impulse to another neuron.
The functional unit of the nervous system, which includes the cell body, dendrites, axon, and terminals.
Parasympathetic nervous system
Division of the autonomic nervous system that functions during restful situations; "breed or feed" part of ANS.
Peripheral nervous system (PNS)
The division of the nervous system outside the brain and spinal cord.
The motor neurons that control voluntary actions of the skeletal muscles.
Sympathetic nervous system
Division of the autonomic nervous system that functions during stressful
situations; "fight or flight" part of ANC.
Relates to the thorax area or the chest.