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Blesi8e Ch10 Terms

[MA3] The Nervous System [Tier 01]

TermDefinition
action potential the temporary electrical charge within a cell
angiography a radiologic study of a cardiac artery using a radiopaque medium.
arachnoid a delicate, lacelike membrane covering the central nervous system
arteriography a radiologic study of an artery using a radiopaque medium
auditory pertaining to the sense of hearing
autonomic spontaneous; the part of the nervous system concerned with reflex control of bodily functions.
axon a long cable that snakes away from the main part of a neuron.
central situated at or related to a center.
cerebellum lower or back brain below the posterior portion of the cerebrum.
cerebrospinal fluid the liquid that circulates within the meninges of the brain, spinal cord and ventricles
cerebrum the largest part of the brain. It is divided into two hemispheres with four lobes in each hemisphere
coma scale refers to the Glasgow Coma Scale used to determine the level of consciousness.
computed tomography (CT) combines a series of X-ray images taken from different angles to create cross-sectional images.
cranium the skull; the eight bones of the head enclosing the brain; generally applied to the 28 bones of the head and face.
dendrite an extension from a nerve cell.
dura mater the outer membrane covering the brain and spinal cord.
electroencephalography (EEG) recording the electric currents generated by the brain' a tracing of brain waves
electromyography (EMG) the insertion of needles into selected skeletal muscles for the purpose of recording nerve conduction time in relation to muscle contraction.
frontal anterior; the forehead bone; refers to the plane drawn through the side of the body from the head to the foot.
ganglion a mass of nerve tissue that receives and sends out nerve impulses.
hypothalamus a structure of the brain between the cerebrum and the midbrain; lies below the thalamus.
interneurons neurons connecting sensory to motor neurons
internuncial neuron a connecting neuron in a neural pathway, usually serving as a link between two other neurons.
longitudinal fissure the deep cleft between the two hemispheres of the cerebrum.
lumbar puncture the insertion of the needle between the vertebrae in the lumbar area for the purpose of withdrawing spinal fluid.
magnetic resonance imaging (MRI) a diagnostic test using magnetic waves to visualize internal body structures.
medulla oblongata enlarged portion of the spinal cord; the lower portion of the brainstem.
meninges the membranes covering the brain and spinal cord
midbrain that portion of the brain connecting the pons and the cerebellum.
migraine a severe headache with characteristic symptoms
motor neuron nerves that permit the body to respond to stimuli.
myelography an X-ray examination of the spinal cord following an injection of a radiopaque material.
occipital pertaining to the back part of the head, the posterior lobe of the cerebrum.
olfactory pertaining to the sense of smell
optic pertaining to the eye or sight.
parasympathetic nervous system a division of the autonomic nervous system.
parietal a central portion of the cerebrum located on each side of the brain
peripheral the portion of the nervous system that connects the CNS to every organ and area of the body.
pia mater innermost of the three meninges of the brain and spinal cord.
plexuses a network of nerves
pons a portion of the brainstem connecting the medulla oblongata and cerebellum with upper portions of the brain
positron emission tomography (PET scan) a form of imaging permitting visualizing the physiologic function of the body.
sciatica inflammation and pain along sciatic nerve felt at the back of the thigh running down the inside of the leg.
sensory neuron refers to the nerves that receive and transmit stimuli from the sense organs
spina bifida occulta a disorder characterized by a defect in the spinal vertebrae with or without protrusion of the spinal cord and meninges.
subarachnoid the space between the pia mater and the arachnoid containing cerebrospinal fluid.
subdural beneath the dura mater; the space between the arachnoid and the dura mater.
sympathetic a division of the autonomic nervous system. ---
synapse the minute space between the axon of one neuron and the dendrite of another.
syndrome the combination of symptoms with a disease or disorder.
temporal relating to the temporal bone on the skull
thalamus a portion of the brain lying between the cerebrum and the midbrain.
thorax the chest; the body cavity enclosed by the ribs and containing the heart and lungs.
ventricle cavities within the brain
Created by: MaesterRay
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