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Spring Quiz 4
Masterbooks Intro to A&P Volume 3
| Term | Definition |
|---|---|
| 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 |