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Cgunderson

A&P Weeks 7-13

TermDefinition
Afferent (sensory) neuron Neuron that carries impulses toward the central nervous system from the periphery; sensory neuron.
Astrocyte Star-shaped neuroglial cell; multiple functions including managing blood-brain barrier and blood flow.
Autonomic nervous system (ANS) Division of the nervous system that monitors and regulates subconscious (involuntary) functions.
Axon In a neuron, the single process that extends from the axon hillock and transmits impulses away from the cell body.
Boyle’s law Principle of physics that states that the pressure of a gas is proportional to its volume.
Central nervous system (CNS) Refers to the brain and spinal cord.
Chemotaxis Process by which a substance attracts cells or organ-isms into (or away from) its vicinity; for example, when inflammation mediators attract white blood cells; sometimes called positive chemotaxis
Dalton’s law Gas law that states that the total pressure exerted by a mixture of gases is the sum of the pressure of each individual gas; also called law of partial pressure
Diapedesis Passage of any formed elements within blood through the vessel wall, as in movement of white cells into an area of injury and infection.
Efferent (motor) neuron Nerve cell that transmits impulses away from the central nervous system to or toward muscles or glands.
Extrinsic factor Substance secreted in the stomach that allows vitamin B12 to be absorbed by the body.
Heme Iron-containing chemical group found in hemoglobin; temporarily binds to oxygen.
Hemoglobin (Hb) Iron-containing protein in red blood cells; responsible for their oxygen-carrying capacity.
Heparin Substance obtained from the liver; inhibits blood clotting.
Immunodeficiency Failure of the immune system mechanisms to defend against pathogens; also called immune deficiency.
Created by: cgunderson
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