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Transcript 
THE NERVOUS SYSTEM
An Introduction
Basic Functions



Sensory Input
Integration
Motor Output
Nervous vs. Endocrine
Fast Control
Neurons
Neurotransmitters
Short-Term Effects
Monitor Stimuli
React
Homeostasis
“Slow” Control
Blood Stream
Hormones
Lasting Effects
Nervous
System
Central
Nervous System
Peripheral
Nervous System
Motor
(efferent)
Sensory
(afferent)
Somatic
Sympathetic
Autonomic
Parasympathetic
Organization of the Nervous System
1.
Central Nervous
System (CNS)


2.
Brain, Spinal Cord
Integration Center
Peripheral Nervous
System (PNS)


Nerves
Sensation, Reaction
Organization of the PNS

Sensory (Afferent)



Sense Receptors  CNS
Monitors interior & exterior
Motor (Efferent)

CNS  Effectors (Muscles/Glands)
Organization of the Efferent Division
1.
Somatic


2.
Voluntary
CNS  Skeletal Muscles
Autonomic


Involuntary
CNS  Glands, cardiac, smooth muscle
Autonomic Organization

Sympathetic
 “Fight

or Flight”
Parasympathetic
 “Rest
or Digest”
Nervous
System
Central
Nervous System
Peripheral
Nervous System
Motor
(efferent)
Sensory
(afferent)
Somatic
Sympathetic
Autonomic
Parasympathetic
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