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21 Cards in this Set
- Front
- Back
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major regions of brain
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-brainstem
-diencephelon -cerebrum -cerebellum |
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brainstem consists of...
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1) medulla
2) midbrain 3) pons |
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function of brainstem
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-subconscious activity
-connects spinal cord to brain -integration of reflexes necessary for survival -basic regulation of internal organs and process |
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function of cerebellum
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-involved in subconsious control of locomotion,balance,posture
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function of diencephalon
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-subconscious regulation of internal organs and conditions
-relays information to cerebrum -contains portions of the limbic system |
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Function of cerebrum
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-conscious thought, control, sensations, and "higher functions"
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Medulla Oblongata functions
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-pathway for ascending and descending nerve tracts
-Regulates: > heart rate >blood vessel diameter >respiration >swallowing >vomiting >hiccupping >coughing >sneezing,etc... |
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what are pyramids?
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found in medulla.
-pair of ridges/bumps on surface of medulla >descending nerve tracts on anterior surface >inferior portion is where the descending/motor fibers decussate |
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what cranial nerves nuclei are in pyramids of medulla?
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- V
- IX to XII |
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part of brainstem involved with sleep?
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Pons
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function of pons?
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-ascending and descending tracts
-Nuclei > pontine: respiratiory center coordinates with medulla >relay between cerebrum and cerebellum >cranial nerves V-IX >involved with sleep |
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midbrain
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mescencephalon
cranial nerves III-V -Tectum with Corpora quadrigemina >superior colliculi >inferior Colliculi |
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Superior Colliculi
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visual reflexes
-Recieve info from inferior colliculi,eyes, skin, cerebrum |
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Inferior colliculi
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-hearing
auditory reflexes |
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Tracts of midbrain
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Descending(motor)
-cerebral penduncles from cerebrum through brainstem to spinal cord |
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between brainstem and cerebrum
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Diencephalon
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thalamus,
hypothalamus, infindibulum, mammilary bodies pineal gland |
diencephalon components
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Edits and directs sensory information to the cerebrum
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thalamus
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Sensory information from spinal cord synapses here before projecting to cerebrum
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thalamus
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Part of Limbic System
Mood modification & emotional regulation |
thalamus
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hypothalamus
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links NS with endocrine system (via pituitary gland)
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