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Spring Quiz 4

Masterbooks Intro to A&P Volume 3

TermDefinition
diencephalon the portion of the brain between the cerebrum and the brainstem; composed of the thalamus and hypothalamus
thalamus relays sensory input from the spinal cord to the primary somatosensory cortex
hypothalamus controls many body functions that seem fairly automatic; one of the main regulators of homeostasis
homeostasis the body's tendency to maintain internal balance
brain stem consists of the midbrain, the pons, and the medulla oblongata
medulla oblongata located below the pons, where it connects the brain to the spinal cord
reticular formation a net-like collection of interconnected nuclei that runs through the midbrain, pons, and medulla
cerebellum helps us to maintain our balance
subclavian arteries located under the collarbones; supply blood to the arms
stroke occurs when cells in the brain are killed by loss of blood flow
aneurysm a dilated area on the wall of an artery; an area of weakness resembling a thin, weak section of a balloon
electrocardiogram (ECG) one way the electrical activity that makes your heart beat can be measured
electroencephalogram (EEG) one way the electrical activity of the brain can be measured
delta waves this pattern is the lowest frequency and occurs in deep sleep
theta waves in adults, these waves occur during meditation or drowsiness
alpha waves occur during wakeful but relaxed times
beta waves occur when the mind is active, like when concentrating or trying to communicate
sleep a state in which an individual achieves a degree of unconsciousness from which he or she can be roused
rapid eye movement (REM) the brain wave pattern during this phase of sleep is a high frequency pattern, reflecting an increase in neuronal activity
amnesia loss of memory; can result from trauma of severe illness
synaptic plasticity the ability of synapses to change their strength, resulting in the encoding of memories
 



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