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Test 1
The brain
17
Physiology
Undergraduate 1
09/17/2006

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Term
Brainstem
Definition
oldest part and central core of the brain. brainstem responsible for automatic survival functions
Term
medulla
Definition
controls heartbeat and breathing.
Term
reticular formation
Definition
nerve network in brainstem. important part in controlling arousal.
Term
thalamus
Definition
sensory switchboard. directs messages to the sensory receiving areas in cortex and transmits replies to cerebellum and medulla
Term
limbic system
Definition
doughnut-shaped system of neural structures at border of brainstem and cerebral hemispheres. associated with emotions such as fear and aggression, drives such as those for food and sex. (hippocampus, amygdala, hypothalamus)
Term
amygdala
Definition
two lima bean-sized neural clusters, components of limbic system. linked to emotion.
Term
hypothalamus
Definition
directs several maintenance activities (eating, drinking, body temperature) helps govern the endocrine system via the pituitary gland. linked to emotion.
Term
cerebral
Definition
interconnected neural cells that covers the cerebral hemispheres. body's ultimate control and information processing center.
Term
glial cells
Definition
cells in teh nervous system that support, nourish, and protect neurons.
Term
frontal lobes
Definition
behind forehead. involved in speaking and muscle movements and in making plans and judgments
Term
pariental lobes
Definition
top of head towards rear. receives sensory input for touch and body position
Term
occipital lobes
Definition
back of head. includes the visual areas, which receive visual information from the opposite visual field
Term
motor cortex
Definition
rear of frontal lobes. controls voluntary movements.
Term
sensory cortex
Definition
in front of the parietal lobes. registers and processes body touch and movement sensations
Term
association areas
Definition
areas in cerebral cortex not involved in primary motor or sensory functions. they are involved in higher mental functions such as learning, remembering, thinking, and speaking.
Term
temporal lobes
Definition
above ears. includes auditory areas, recieves auditory information primarily from opposite ear
Term
somatosensory cortex
Definition
located within parietal lobe. sensory from thalamus to somatosensory cortex to motor.
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