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Brain chpt 10-15

QuestionAnswer
CNS Central Nervous System
PNS Peripheal Nervous System
Astrocyte (star-shaped) Provides structural support for neurons and blood vessels. Influences the blood brain barrier
Microglial Phagocytize micro-organisms, foreign substances & necrotic tissue
Oligodendrocyte forms myelin sheats around the axons of several CNS neurons
Schwann Cells Forms myelin sheaths around parts of the axon of a PNS neuron
Refractory Period-absolute no response to stimulus
Refractory Period-relative Action Potential may be produced
Convultions Folds and ridges in the forebrains of the Cerebrum
Rami Branches of the spinal nerves-include Dorsal & Ventral
Folia Ridges in Cerebellum cortex
Dermatome Area of skin supplied with sensory innervation by a pair of spinal nerves
Plexus A braid or intermingling of the nerves
Endocrine Gland ductless gland that secretes chemical signals (hormones) into the circulatory system
Subdivisions of PNS-Sensory Transmit actions for sensory receptors receptors to CNS
Subdivisions of PNS-Motor Carries actions potentials away from the CNS in cranial or spinal nerves
Brochas Area receives input from Wernicke's area and sends implulses to the pre-motor and motor areas to activgiate the muscles requred for speech
Wernickes Area Comprehends and formulates speech
Decussation of the Pyramids Where motor tracts cross over in the medulla ..form an X
Parts of the Cerebellum "Little Brain" Superior-Midbrain..Middle-Pons..Inferior- Medulla Oblongata
Thalamus Largest part of Diencephalon-collection of nuclei-All senses relay thru here execept smell
Cerebronspinal fluid Found in the ventricles of the brain
Dermatome Area of skin supplied with sensory innervation by a pair of spinal nerves
Plexus A braid or intermingling of the nerves
Endocrine Gland ductless gland that secretes chemical signals (hormones) into the circulatory system
Subdivisions of PNS-Sensory Transmit actions for sensory receptors receptors to CNS
Subdivisions of PNS-Motor Carries actions potentials away from the CNS in cranial or spinal nerves
Brochas Area receives input from Wernicke's area and sends implulses to the pre-motor and motor areas to activgiate the muscles requred for speech
Wernickes Area Comprehends and formulates speech
Decussation of the Pyramids Where motor tracts cross over in the medulla ..form an X
Parts of the Cerebellum "Little Brain" Superior-Midbrain..Middle-Pons..Inferior- Medulla Oblongata
Thalamus Largest part of Diencephalon-collection of nuclei-All senses relay thru here execept smell
Cerebronspinal fluid Found in the ventricles of the brain
Created by: mgeorge