Nervous a. : possessing nerve; sinewy; strong; vigorous.

Nervous a. : Possessing or manifesting vigor of mind; characterized by strength in sentiment or style; forcible; spirited; as, a nervous writer.

Nervous a. : Of or pertaining to the nerves; seated in the nerves; as, nervous excitement; a nervous fever.

Nervous a. : Having the nerves weak, diseased, or easily excited; subject to, or suffering from, undue excitement of the nerves; easily agitated or annoyed.

Nervous a. : Sensitive; excitable; timid.

Example:
Nudity and humans, why are we Nervous to be seen naked by others?

Taxonomy
neurons, the nervous system, Nervous system, CNS, the brain, PNS, spinal cord, nerve impulses, central nervous system, navs, sensory neurons, Glial cells, peripheral nervous system, signals, impulses, nerves, motor neurons, cells.

Defination from the web:
nervous system is a network of specialized cells that communicate information about an organism's surroundings and itself. ... The neurons of the nervous systems of animals are interconnected in complex arrangements and use electrochemical signals and neurotransmitters to ...