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MT 126.3 CNS

Central Nervous System

QuestionAnswer
The controling and communicating system of the body responsible for all behavior Nervous System
Specialized to support and protect neurons Glial Cells
Specialized cell that acts as microbial eating scavengers protecting the CNS from infection Microglial
Highly branched fibers that project from cell body and specialized to recieve neural impulses Dendrites
Chemicals located at the synapse bewtween nerve cells. help to speed up and improve the transmission of an impulse Neurotransmitters
Relays messages to other parts of the brain. Regulates: heartbeat, blood pressure, and respiration Controls: swallowing, coughing sneezing and vomiting Medulla
Regulates: assists in respiration, serves as alink to other parts of the brain Pons
Reflexes of the eyes and ears Midbrain
Main relay center conducting information between the spinal cord and cerebrun Thalamus
Regulates the pituitary gland, links the nervous and endocrine systems Hypothalamus
Largest part of the brain Cerebrum
Second largest part of the brain Cerebellum
Maintains equilibrium Cerebellum
Controls motor functions Cerebrum
Convoluted, outer layer of gray matter covering the cerebrum functionally divided into two types of neurons Cerebral Cortex
These transmit impulses from the peripheral receprtors to the CNS Afferent nerves
Sensory nerves another name for; Afferent nerves
Motor nerves another name for Efferent nerves
These transmitt impulses from the CNS to the peripheral structures the respond with movement or action Efferent nerves
Consists of fibers that connect the two hemispheres and other areas of the brain. White matter
Contains myelinated nerve fibers also found in the spinal cord White matter
Contains cell bodies and unmyelinated fibers of neurons Gray matter
Allow for multiple, rapid impules to oocur simultaneously Gray matter
A large band of white matter that connects the right and left hemisphers of the cerebrum Corpus Callosum
It controls many reflex activities of the body, it transmits information back and forth from peripheral nerves to the brain via ascending and descending tracts Spinal Cord
Lies between the bone and spinal cord Epidural space
In between the dura mater and the arachnoid Subdural
The middle layer. Thin delicate membrane above the pia mater and below the dura mater Arachnoid
The inner layer or meninge, A thin vascular membrane that adheres to the brain and spinal cord Pia mater
This fluid is a shock absorber and nutrient carrier for the spinal cord Cerebrospinal fluid
Produced by the choroids plexuses Cerebrospinal fluid
Three parts of the brain Medulla, Pons, Midbrain
Affects skeletal muscles and junctions in between the CNS and the muscles fibers Acetylcholine
Affects autonomic nervous system. Affects mood Norepinephrine
Affects motor function, basal ganglia (coordination and balance Dopamine
Affects the limbic system and sleep patterns Serotonin
Natural morphine-like chemicals that regulate pain perception Endorphins & Enkephalins
located just inferior to the lateral ventricles Third Venticle
located inferior to the third ventricle Fourth ventcle
Created by: Chris Flaig
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