a&p - the divisions of the nervous system
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22 Terms
The Nervous System
what are the 2 divisions of the nervous system?
Central Nervous System (CNS)
Peripheral Nervous System (PNS)
Central Nervous System
what makes up the CNS?
the brain and spinal cord of the dorsal body cavity
Central Nervous System
the CNS is the ___ and ___ center
integration, control
Central Nervous System
what is the function of the CNS?
interpret sensory input
dictate motor output
Peripheral Nervous System
where is the PNS located?
outside of the CNS
Peripheral Nervous System
what is the PNS made up of?
nerves that extend from the brain and spinal cord
Peripheral Nervous System
what are cranial nerves?
Nerves that extend to and from the brain
Peripheral Nervous System
what are spinal nerves?
Nerves that extend to and from the spinal cord
Peripheral Nervous System
what are the 2 functional divisions of the PNS?
Sensory (Afferent) Division
Motor (Efferent) Division
Sensory (Afferent) Division
what does the sensory division do?
conveys impulses to the CNS from the sensory receptors
Sensory (Afferent) Division
what are the 2 kinds of sensory receptors?
somatic sensory fibers
visceral sensory fibers
Sensory (Afferent) Division
what do somatic sensory fibers do?
they convey impulses from skin, skeletal muscle, and joints to the CNS
Sensory (Afferent) Division
what do visceral sensory fibers do?
convey impulses from the visceral organs of the ventral body cavity to the CNS
Motor (Efferent) Division
what does the motor division do?
conveys impulse from the CNS to efferent organs
Motor (Efferent) Division
what are the two kinds of efferent organs?
Muscles
Glands
Motor (Efferent) Division
what are the subdivisions of the motor division?
Somatic Motor Nervous System
Visceral Motor (Autonomic) Nervous System
Motor Division - Somatic Motor Nervous System
what is the somatic motor nervous system composed of?
somatic motor nerve fibers
Motor Division - Somatic Motor Nervous System
what do somatic motor nerve fibers do?
conducts impulses from the CNS to skeletal muscle
Motor Division - Somatic Motor Nervous System
is skeletal muscle voluntary or involuntary nervous system?
voluntary
Motor Division - Visceral Motor (Autonomic) Nervous System
what do the visceral motor nerve fibers do?
conduct impulses from the CNS to smooth muscle, cardiac muscle, and glands
Motor Division - Visceral Motor (Autonomic) Nervous System
are smooth muscle, cardiac muscle, and glands voluntary or involuntary nervous system?
involuntary nervous system
Motor Division - Visceral Motor (Autonomic) Nervous System
what are the two functional divisions of the autonomic nervous system?
Parasympathetic
Sympathetic
Note 
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