PHYSIOLOGY
CENTRAL NERVOUS SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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efferent nerve pathways from the brain and spinal cord to the rest of the body’s tissues
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internal organs and glands
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Brain & Spinal Cord
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afferent nerve pathways between the sensory organs of the head.
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Detailed explanation-1: -The peripheral nervous system includes the nerves and ganglia outside the brain and spinal cord. The PNS includes the peripheral nerves, neuromuscular junctions, cranial nerves, and spinal nerves. This system also carries information to and from the central nervous system.
Detailed explanation-2: -There are two main types; spinal nerves and cranial nerves. Functionally, the PNS can be divided into the autonomic and somatic nervous systems. Both of these can be further subdivided; the former into sympathetic and parasympathetic arms and the latter into sensory and motor divisions.
Detailed explanation-3: -Neural pathways that connect the brain and the spinal cord are called the ascending and descending tracts. They are responsible for carrying sensory and motor messages to and from the periphery.
Detailed explanation-4: -The central nervous system is made up of the brain and spinal cord. The peripheral nervous system is made up of nerves that branch off from the spinal cord and extend to all parts of the body.
Detailed explanation-5: -Autonomic nervous system (ANS): Controls involuntary bodily functions and regulates glands. Somatic nervous system (SNS): Controls muscle movement and relays information from ears, eyes and skin to the central nervous system.