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Nervous System Quiz

TermDefinition
Function Takes inputs and processes them
Steps 1. Information in (sensory), 2. information integrated or processing (integration), 3. information out (motor output).
Central Nervous System In charge of processing or integration
Peripheral Nervous System Away from spinal cord and brain, sensory input and motor output.
Sensory (afferent) somatic - muscles, skin, bones, and joints & visceral - internal organs
Motor (efferent) SNS and ANS, SNS is in charge of voluntary.
ANS Nervous System Involuntary, Sympathetic (Fight, Flight, or Freeze) main job is to keep the body alive from physical harm. Parasympathetic - Rest and Digest. Cannot do primary thinking.
CNS Neuroglia Oligodendrocytes - make myelin, astrocytes - structural support, microglia - phagocytosis + cleaning up, Ependyma - cerebra spinal fluid
PNS Neuroglia Schwann Cells - make myelin, Satellite cells - support.
Potential Difference Charge difference created by K, Na, and Ca
Polarized Membrane Difference in membrane
Resting potential -70 mV, nerve does not send an impulse
Threshold What we get to send a message, Na channels start to open
Action potential impulse is sent when it gets action potential
Refractory period Reset period, gates close
Hyper-polarization Undershoot due to K channels being slow
Graded potential Graded potential, electrical charges or ions that excite or inhibit
Absolute no stimulus no impulse
Relative Impulse has to be stronger to send the message.
Created by: nuhaSalim
 

 



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