bio chap 8

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Author:
nissansarebetter88
ID:
142721
Filename:
bio chap 8
Updated:
2012-03-20 12:52:16
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john88
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bio ch8
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  1. what are the general functions of the nervous system
    • -detection of internal and external changes
    • - analysis of the information recieved
    • -organization of the information for immediate and future use
    • -initiation of the appropriate actions.
  2. how are nerve impulses formed and conducted
    • impulse- stimulas happens and the neuron has a sudden depolorization
    • conducted- by a wave of depolorzation after the impuls repolarization accures
  3. how is CNS protected from mechanical injuries
    surrounding bones and fiberous membranes provide both protection and support. the brain is protected by the cranim and the spinal cord is protected by the vertebra of the back.
  4. what are the functions of the madulla oblongata
    it is the brains most inferior portion. and is the connective link with the spinal cord
  5. what is the relationship amon the ventricals, the meninges, and the cerebrospinal fluid
    there are 4 ventricals in the brain and are filled with cerebrospinal fluid. excess fluid is sent down the spinal cord by the meninges
  6. what composes the peripheral nervous system
    it consists of crainial and spinal nerves that connect the central nervous system to the other portions of the body
  7. what is reflex
    rapid involontary and predictable responses to internal and external stimuli. they maintain homeostasis and enhance the chances of survival
  8. how do the somatic and autonomic nervous systems differ
    • somatic- volontary, effects skeletal muscles
    • autonomic- involontary, effects smooth, cardiac muscles and glands.
  9. check understanding
    • 1axon impulses are carried away
    • 2interneurons nurons conduct impulses from place to place
    • 3sodium impulse forme by sudden flow of
    • 4neurotransmitter synaptic trannsmission is dependent on
    • 5corpus callosum impulses pass from one cerebral hemisophere to another
    • 6frontal volontary muscle contractions controled
    • 7cerebrum intelegance memory and will
    • 8hypothalamus regulates appitate and bdy temp
    • 9medulla oblongata heart and breathing rate
    • 10cerebellem cordination of body movements
    • 11subarachnoid filled with cerebrospinal fluid and blank of the mennings
    • 12spinal cord pathway between brain and spine nerves
    • 13anterior roots of spinal nerves axon of motor neurons
    • 14autonomic involontary responses maintain homeostatis
    • 15sympathetic physical responses to emergancys

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