EVERYDAY SCIENCE

SCIENCE

NERVOUS SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
how many nervous systems do we have?
A
4 (PNS, CNS, ENS, TNS)
B
2 (CNS, PNS)
C
1 (ENS)
D
3 (CNS, PNS, ENS)
Explanation: 

Detailed explanation-1: -In vertebrates it consists of two main parts, the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS consists of the brain and spinal cord. The PNS consists mainly of nerves, which are enclosed bundles of the long fibers or axons, that connect the CNS to every other part of the body.

Detailed explanation-2: -The nervous system has two main parts: 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-3: -Cranial nerves: There are 12 pairs of nerves that connect directly to your brain, and 11 of them are part of your peripheral nervous system (the second cranial nerve, which controls your vision, is part of your central nervous system).

Detailed explanation-4: -Nerves In the Peripheral Nervous System Sensory: Connects the brain and spinal cord to your skin and allow you to feel pain and other sensations. Autonomic: Controls involuntary function (e.g., blood pressure, digestion, heart rate).

Detailed explanation-5: -Our nervous system is divided in two components: the central nervous system (CNS), which includes the brain and spinal cord, and the peripheral nervous system (PNS), which encompasses nerves outside the brain and spinal cord.

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