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Parts of the Brain
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13
Anatomy
8th Grade
05/21/2009

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Term
Cerebrum
Definition
the largest part of the human brain
contains all consious processes
surface is folded with upward folds called gyri and bottom folds are sulci
Term
Diencephalon
Definition
second major part of the brain
surrounds the third ventricle
contains thalamus, hypothalamus, and epithalamus
Term
Thalamus
Definition
contains paired masses of grey matter into bodies called nuclei
it is a relay station for sensory impulses to the cerebral cortex
Term
Hypthalamus
Definition
is iferior to the thalamus and composed of a dozen or more nucei
Homostasis is regulated in this area, and recepters recieve impulses
hormones stored in the pituitary gland are produced here
Term
Cerebellum
Definition
second largest portion of the human brain
has two hemispheres and small surface folds
helps coordinate and control movements initiated by the cerebrum
Term
Brain Stem
Definition
is continuous with the spinal cord
Term
Midbrain
Definition
has fibers that carry sesory impulses from the spinal cord to the thalamus and motor impulses from the cereberal cortex back to the spinal cord
Term
Pons
Definition
is a bridge like structure containing many fibers carrying signals to the brain
Term
Medulla Oblongata
Definition
conains grey matter carrying signals from the spinal cord and other parts of the brain nuclei coordinate activities by integrating signals from sensory neurons and sending responses to the cerebellum or the thalamus the cardiac center is a mass of neurons located in the medulla for the regulation of the heart rate and other vasomotor centers regulate the diameters of blood vessels the depth and rate of breathing are regulated in the respiratory center, also in the medulla
Term
Pituitary Gland
Definition
stores hormones made by the hypothalamus
Term
Corpus Callosum
Definition
is a mass of fibers carrting sigmals between the two cerebral hemispheres
Term
Olfactory Bulbs
Definition
associated with the sense of smell
Term
Crainial Nerves
Definition
nerves in the brain
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