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Answer these questions about the nervous system:
1. Describe the role of the nervous system.
2. Describe the structure and functioning of the basic unit of the nervous system, the neuron.
3. Explain how nerve impulses travel and what occurs during a reflex arc.
4. List the parts and discuss the function of the central nervous system.
5. Map out the major areas and control centers of the brain and discuss their roles.
6. Describe the two branches of the peripheral nervous system: the autonomic branch and the somatic branch.
7. Describe one disorder of the nervous system.

4. It controls all parts of the body. It receives and interprets messages from all parts of the body and sends out instructions. The three main components of the central nervous system are the brain, spinal cord, and neurons

Explanation:

5. Cerebrum: is the largest part of the brain and is composed of right and left hemispheres. It performs higher functions like interpreting touch, vision and hearing, as well as speech, reasoning, emotions, learning, and fine control of movement.

Cerebellum: is located under the cerebrum. Its function is to coordinate muscle movements, maintain posture, and balance.

Brainstem: acts as a relay center connecting the cerebrum and cerebellum to the spinal cord. It performs many automatic functions such as breathing, heart rate, body temperature, wake and sleep cycles, digestion, sneezing, coughing, vomiting, and swallowing.

6. The peripheral nervous system (PNS) is divided into the somatic nervous system and the autonomic nervous system. The somatic nervous system (SoNS) is the part of the peripheral nervous system associated with the voluntary control of body movements via skeletal muscles.

between the two muscle layers is the myenteric or auerbach's plexus, which controls peristalsis. in the colon, the muscularis externa is much thicker because the feces are large and heavy, requiring more force to push along. the stomach has a third layer of muscularis externa: the inner oblique layer.

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explanation: