All the nerve processes radiating out beyond the brain and spinal cord, as well as all the neurons outside the brain and spinal cord, constitute the peripheral nervous system.
Spinal cord is the backbone present in the vertebrates. It is essential for the correct posture and erect body. It extends from the end of the brain till the hipbone. The spinal cord consists of total 5 types of bones called vertebrae, that are total 33 in number.
Peripheral nervous system consists of parts of nervous system outside the brain and the spinal cord. It involves cranial and spinal nerves and their roots and branches, peripheral nerves, and neuromuscular junctions.
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Answer:
The power of the lens of an eye adjust or bends the light rays to provide an image on the retina depending on distance of the object.
Explanation:
The lens of an eye and the cornea work together in forming a real image in the retina that houses numerous receptors in the fovea and blind spot of the optic nerve.
Image will be formed in the retina when light rays converging most at the cornea upon entering and exiting the lens.The power of adjusting the eyes focal length is known as accommodation.
