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voc words 3/6/2018

aprendercelo

TermDefinition
Regulation is defined as any process that modulates the frequency, rate or extent of any biological process, quality or function.
Irritability is the excitatory ability that living organisms have to respond to changes in their environment.
Impulse The signal that travels along the length of a nerve fiber and ends in the release of neurotransmitters.
Stimulus a thing or event that evokes a specific functional reaction in an organ or tissue.
Response any behavior of a living organism that results from an external or internal stimulus.
Receptor an organ or cell able to respond to light, heat, or other external stimulus and transmit a signal to a sensory nerve.
Neuron a specialized cell transmitting nerve impulses; a nerve cell.
Effector A nerve ending that carries impulses to a muscle, gland, or organ and activates muscle contraction or glandular secretion.
Cell body the nucleus-containing central part of a neuron exclusive of its axons and dendrites
Dendrites a short branched extension of a nerve cell, along which impulses received from other cells at synapses are transmitted to the cell body.
Cell body the nucleus-containing central part of a neuron exclusive of its axons and dendrites
axon the long threadlike part of a nerve cell along which impulses are conducted from the cell body to other cells.
meninges the three membranes (the dura mater, arachnoid, and pia mater) that line the skull and vertebral canal and enclose the brain and spinal cord.
cerebrum the principal and most anterior part of the brain in vertebrates, located in the front area of the skull and consisting of two hemispheres,
cerebellum the part of the brain at the back of the skull in vertebrates. Its function is to coordinate and regulate muscular activity.
Medulla oblongata the continuation of the spinal cord within the skull, forming the lowest part of the brainstem and containing control centers for the heart and lungs.
Central nervous system (CNS) the part of the nervous system which in vertebrates consists of the brain and spinal cord,
Peripheral nervous system (PNS) That portion of the nervous system that is outside the brain and spinal cord.
meninges the three membranes (the dura mater, arachnoid, and pia mater) that line the skull and vertebral canal and enclose the brain and spinal cord.
neurotransmitters a chemical substance that is released at the end of a nerve fiber by the arrival of a nerve impulse and, by diffusing across the synapse or junction, causes the transfer of the impulse to another nerve fiber, a muscle fiber, or some other structure.
Created by: Stephanie_14