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Brain chpt 10-15
Question | Answer |
---|---|
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 |