What are the two main components of the nervous system? a. the brain nervous system and the spinal cord nervous system b. the parasympathetic nervous system and the brain nervous system c. the cranial nervous system and the parasympathetic nervous system d. the central nervous system and the peripheral nervous system select the best answer from the choices provided a b c d

the answer is A

Explanation:

Explanation:

The nervous system can be defined as the electrical wiring of the body.

Specifically, the nervous system is formed by two parts: the central nervous system and the peripherial nervous system.

The central nervous system is formed by the brain, the spinal cord and nerves.

The peripherial nervous system is formed by sensory neurons, ganglia and nerves, which connects the central nervous system with the peripherial.

Therefore, the right answer here is D.

since you have not provided the options here i   am going to give you general overview about hormone.hormone are actually the part of endocrine system in our body and produced by the endocrine glands. the hormones act like a chemical messenger   within human body. once produce by the glands they   travel through the blood stream and reach at specific or target tissue and organs   which result in control of our body function. the hormones are specific in their work and work on only the targeted tissue or organ   . with the of hormone endocrine system regulate the heart rate , metabolism, our mood and   growth as well as the development and even the sleeping cycle etc. they actually are the messenger for body cell and organs .