GENERAL HISTOLOGY

Detailed explanation-1: -Nerve fibers of the PNS are classified according to their involvement in motor or sensory, somatic or visceral pathways. Mixed nerves contain both motor and sensory fibers. Sensory nerves contain mostly sensory fibers; they are less common and include the optic and olfactory nerves. Motor nerves contain motor fibers.

Detailed explanation-2: -Most of the nerves have both sensory and motor components. Three of the nerves are associated with the special senses of smell, vision, hearing, and equilibrium and have only sensory fibers. Five other nerves are primarily motor in function but do have some sensory fibers for proprioception.

Detailed explanation-3: -1: Spinal nerves: Spinal nerves contain both sensory and motor axons. The cell bodies of sensory neurons are located in dorsal root ganglia.

Detailed explanation-4: -The spinal nerves carry both sensory and motor messages and are called “mixed nerves.” Among the cranial nerves are five pairs of motor nerves, three pairs of sensory nerves, and four pairs of mixed nerves.

Detailed explanation-5: -The peripheral nervous system is divided into two main parts: Autonomic nervous system (ANS): Controls involuntary bodily functions and regulates glands. Somatic nervous system (SNS): Controls muscle movement and relays information from ears, eyes and skin to the central nervous system.