35-3 divisions of the nervous system page 901. a. the central nervous system (cns) 1. the cns is...
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35-3 Divisions of the Nervous System
Page 901
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A. The Central Nervous System (CNS)
• 1. The CNS is made up of the brain and spinal cord.
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A. The Central Nervous System (CNS)
• 2. The function of the CNS is to send messages, process information, and analyze information.
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B. The Brain
• 1. The cerebrum is the largest region of the human brain.
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B. The Brain
• 2. The cerebrum controls voluntary (controlled) actions of the body.
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B. The Brain
• 3. The cerebellum is the 2nd largest region of the brain located in the back of the skull.
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B. The Brain
• 4. The brain stem connects the brain and spinal cord.
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B. The Brain
• 5. The thalamus receives messages from all the sensory receptors and sends the information to the cerebrum.
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B. The Brain
• 6. The hypothalamus is the control center for recognition and analysis of hunger, thirst, fatigue, anger, and body temperature.
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C. The Spinal Cord
• 1. The spinal cord processes some reflexes.
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C. The Spinal Cord
• 2. A reflex is a quick automatic response to a stimulus.
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D. The Peripheral Nervous System (PNS)
• 1. The PNS is made up of all the nerves that are outside of the brain and spinal cord.
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D. The Peripheral Nervous System (PNS)
• 2. The sensory division sends impulses from sense organs to the central nervous system.
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D. The Peripheral Nervous System (PNS)
• 3. The motor division sends impulses from the central nervous system to the muscles.
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D. The Peripheral Nervous System (PNS)
• 4. The somatic nervous system controls conscious movements, such as muscle movement.
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D. The Peripheral Nervous System (PNS)
• 5. A reflex arc includes a sensory receptor, sensory neuron, motor neuron and effector.
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D. The Peripheral Nervous System (PNS)
• 6. The autonomic nervous system regulates involuntary movements.
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