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The Nervous System (3/24 Lecture)
Terms in this set (13)
What are the three overlapping functions of the nervous system?
1. Sensory Input
3. Motor Output
Sensory Input (Info)
is information gathered from the internal and external environment by sensory receptors.
What kind of sensory information do receptors receive?
-The 5 Senses, blood pressure, salt concentration, oxygen, PLT, electrolytes, temp.
How is gathered information (sensory input) sent and where does it go?
Via sensory neurons to the brain and spinal cord
Is Sensory Input Afferent or Efferent pathway?
Afferent (sends info TO brain/spinal cord)
Integration (Integrate Sensory)
When the nervous system processes and interprets the sensory input (perceives conciousness-- color, hot/cold). Interneurons then decide the best response to the input.
Where does Integration take place?
The brain/spinal cord.
motorneurons communicate with effectors (glands, muscles) to cause a response.
Is Motor Output a Afferent or Efferent pathway?
Efferent (sends info AWAY from brain/spinal cord)
Brain and Spinal Cord
12 pairs of cranial nerves and 31 pairs of spinal nerves
Why have things that are autonomic (involuntary)?
Because there would be sensory overload if not (too much information to control)
Connects the two hemispheres of the brain, and carries the messages needed to coordinate left and right brain activity.
Right controls left. Left Controls Right.
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