Question

Can u plz explain the central nervous system and autonomous nervous system. Plzzzz!!!!

Answer 1

The first is the central nervous system (CNS), which is the control center for the whole system. It consists of the brain and spinal cord. All body sensations and changes in our external environment are relayed from receptors and sense organs to the CNS to be interpreted.

The peripheral nervous system (PNS) is subdivided into several smaller units. This system consists of all the nerves that connect the brain and spinal cord with sensory receptors, muscles, and glands.

The PNS can be divided into two subcategories: the sensory system, which consists of afferent or sensory neurons that convey information from receptors in the periphery of the body to the brain and spinal cord, and the motor system, which consists of efferent or motor neurons that convey information from the brain and spinal cord to muscles and glands.

The motor system can be further subdivided into two subcategories. The first is the somatic nervous system , which conducts impulses from the brain and spinal cord to skeletal muscle, thereby causing us to respond or react to changes in our external environment.

The second is the autonomic nervous system(ANS), which conducts impulses from the brain and spinal cord to smooth muscle tissue (like the smooth muscles of the intestine that push food through the digestive tract), to cardiac muscle tissue of the heart, and to glands (like the endocrine glands). The ANS is considered to be involuntary.

The organs affected by this system receive nerve fibers from two divisions of the ANS: the sympathetic division, which stimulates or speeds up activity and the parasympathetic division, which stimulates or speeds up the body’s vegetative activities such as digestion, urination, and defecation and restores or slows down other activities.




hope it helps u

Answer 2

The central nervous system (CNS) is the part of the nervous system consisting of the brainand spinal cord. The central nervous system is so named because it integrates information it receives from, and coordinates and influences the activity 
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Autonomic nervous system: A part of the nervous system that regulates key involuntary functions of the body, including the activity of the heart muscle; the smooth muscles, including the muscles of the intestinal tract; and the glands