NEET BIOLOGY

Detailed explanation-1: -Bundle of neurons is called a nerve. Sensory neurons bundle together to form sensory nerve . Motor neurons bundle together to form motor nerve . These neurons help in transferring impulses from the central nervous system (CNS) to other parts of the body and vice versa.

Detailed explanation-2: -Structure of a Nerve A nerve contains bundles of nerve fibers, either axons or dendrites, surrounded by connective tissue. Sensory nerves contain only afferent fibers, long dendrites of sensory neurons. Motor nerves have only efferent fibers, long axons of motor neurons.

Detailed explanation-3: -Your nerves are made up of: Axons, cord-like groups of fibers in the center of your nerve. Dendrites, branches that carry electrical impulses. Endoneurium, a layer of connective tissue surrounding axons.

Detailed explanation-4: -Nerves are bundles of axons in the PNS. Nerves can be classified as sensory (afferent) for signals coming into the CNS from the PNS, or motor (efferent) for signals from the CNS to the PNS. Most nerves are mixed, and therefore carry both sensory and motor information.

Detailed explanation-5: -The bundles of nerve fibers are called as fasciculi. Each fasciculus is surrounded by a layer of connective tissue called the perineurium.