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Motor Neurons/Efferent neurons
Transmits neural messages about motor movement from the CNS to the PNS
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Sensory Neurons
Transmits neural messages about bodily sensations from the PNS to the CNS
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Interneurons
Transfers neural messages sensory neurons and motor neurons. The CNS, including the brain and spinal cord, is made up of interneurons.
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What is the CNS made up of?
Brain and Spinal Cord
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Functions of the Brain
Responsible for organizing, interpreting and coordinating actions, thoughts and behaviors
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Functions of the Spinal Cord
Connects brain to the PNS and carries motor information from the brain and sensory information from the body
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What is the PNS made up of?
- Somatic:
- Autonomic:
- Parasympathetic:
- Enteric:
- Sympathetic:
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Somatic NS
Controls voluntary motor movement (skeletal)
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Autonomic NS
- Regulates visceral muscles (non-skeletal), organs, glands and transmits neural messages to the CNS about their activity.
- Involved in Unconscious Responses
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Three Subdivisions of the Autonomic NS
- Parasympathetic
- Enteric
- Sympathetic
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