Term
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Definition
-One of the 3 main portions of the brain -takes up 83% of the brain's volume |
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Term
| What are the cerebral hemispheres? |
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Definition
the half-globes of the cerebrum |
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Term
| What are gyri (gyrus, singular)? |
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Definition
| the thick folds of the cerebrum |
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Term
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Definition
| The shallow grooves of the cerebrum that separate the gyri |
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Term
| What is the longitudinal fissure? |
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Definition
| The deep groove in the brain that separates the right and left hemispheres from each other |
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Term
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Definition
-located at the bottom of the longitudinal fissure -connects the left and right hemispheres of the cerebrum -thick bundle of nerve fibers -this is the prominent landmark for description purposes |
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Term
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Definition
-inferior to the cerebrum -occupies the posterior cranial fossa -2nd largest region of the brain -10% of the brain's volume but more than 50% of its neurons |
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Term
| What are the 3 major portions of the brain? |
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Definition
| Cerebrum, cerebellum, and brainstem |
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Term
| What are the 3 parts of the brainstem? |
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Definition
| Midbrain, pons, and medulla |
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Term
Where is the brainstem located? |
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Definition
| Below the cerebellum and above the spinal cord |
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Term
| What is gray matter of the brain? |
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Definition
-Consists of neuron cell bodies, dendrites and synapses -forms the surface layer over the cerebrum and cerebellum -also called the cortex |
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Term
| What is the cortex of the brain? |
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Definition
| The surface layer that covers the cerebrum and cerebellum |
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Term
| What is white matter of the brain? |
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Definition
-lies deep to the gray matter -composed of tracts |
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Term
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Definition
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Term
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Definition
-Appears as the anterior bulge in the brainstem -lies just above the medulla -relays signals assisting with sleep, hearing, equilibrium, taste, eye movements, facial expressions and sensation, swallowing, bladder control and posture |
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Term
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Definition
| the gyri of the cerebellum |
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Term
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Definition
| the fern-like patter of the cerebellum |
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Term
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Definition
-primary motor area
-most posterior gyrus of frontal lobe immediately anterior to central sulcus
-controls trunk, shoulder, arm and facial muscles |
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Term
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Definition
| pyramidal cells of the precentral gyrus |
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Term
| Arachnoid layer of the brain |
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Definition
-consists of squamous epithelium
-covers corte of the brain |
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Term
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Definition
| 1 of 3 centers of basal nuclei |
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Term
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Definition
-masses of cerebral gray matter buried deep in white matter
-lateral to the thalamus
-receives input from the substantia nigra
-involved in motor control |
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Term
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Definition
| -output neurons of cerebrum |
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Term
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Definition
| layer covering the surface of the cerebral hemispheres |
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Term
| glial and myelinated nerve fibers |
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Definition
| What does the cerebral white matter composed of? |
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Term
| You have no brain function but can still live if... |
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Definition
| you only have your brainstem |
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Term
| What is anterior to the pituitary gland? |
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Definition
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Term
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Definition
| This is called the "seed of the soul" b/c it's the only part of the brain that is unpaired |
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Term
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Definition
-The pituitary gland hangs from this
-You have to have this and the medulla to live |
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Term
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Definition
| This is the primary sensory area |
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Term
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Definition
| This is the "cross" at the base of the brain where the optic nerves cross |
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Term
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Definition
| This is what holds the pituitary gland |
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Term
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Definition
| This is the crevice between the cerebellum and th occipital lobe |
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Term
| When the brainstem dies... |
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Definition
| you are considered to be braindead |
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Term
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Definition
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Term
| Degeneration of Substantia Nigra |
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Definition
| What causes Parkinson's Disease? |
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Term
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Definition
| These anchor the cerebrum to the brainstem |
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Term
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Definition
-short segment of the brainstem that connects the hindbrain to the forebrain
-located above the pons |
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