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beginner presentation

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by

Nikki Walker

on 30 January 2013

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Transcript of beginner presentation

Nervous System Central Nervous System (CNS) Peripherial Nervous system (PNs) 3 functions of CNS and PNS
1 Sensory
2 Integrative
3 Motor Neurons
Structural and functional units of the system
React to physical and chemical changes in their surroundings
Transmit information
Supported by neuroglial cells Neurons vary in Function
Sensory (afferent)
Interneurons
Motor (efferent) Synapse Action Potential Membrane potential Polarization Depolarization Repolarization Local Anesthetics
decrease membrane permeabilty to Na
interrupts impulses
no communication to the brain
prevents touch and pain Nerve Pathways
Refelx arcs
Withdrawl reflexes The Brain! Frontal - reasoning, planning, problem solving Parietal - orientation, perception, recognition Occipital - vision Temporal - recognition of auditory stimuli Cerebellum - movement, posture, balance Medulla Oblongata - vital fuctions
heart rate and respiration Brain Stem - breathing, heart beat, and
brain function Limbic System - emotional brain Cerebrum - Higher Level Thinking http://www.neuroskills.com/brain.shtml 12 cranial nerves (246)
o
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t
a
f
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g
v
s
h Test:
Smell
vision
eye movement
depress elevate jaw
stick out tongue
gag reflex
swallow
smile, purse lips
can you hear?
stand on one foot
elevate shldrs
turn head side to side C4 - T1 (247)
Chicken Dance
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