Names, Functions, and Locations of Cranial NervesThere are twelve pairs of cranial nerves in man. A cranial nerve arises from the brain by two roots, a dorsal and a ventral root. These two roots do not unite but appear like separate nerves. The cranial nerves are generally medullated having a myelin sheath. The nerve fibres which carry impulses or sensations or stimuli are of 3 kinds. They are sensory, motor and mixed nerve fibres.
Cranial Nerves in Man: Origin, Nature Distribution and Function
The cranial nerves are twelve pairs of nerves from the central nervous system. The cranial nerves are loosely based on their functions. In this summary, we discuss the nomenclature of the cranial nerves and supply some background information that might make it easier to understand the nerves and their function. Download our cranial nerves PDF summary table here. You can also check out our Cranial Nerve Anatomy Quiz here. Cranial nerves and cranial foramina diagram 1. The cranial nerve nuclei will be covered in more detail in each cranial nerve article.
The cranial nerves are nerves that arise from the brain and exit the skull through holes cranial foramina at its base rather than through the spinal cord. Peripheral nervous system connections with various organs and structures of the body are established through cranial nerves and spinal nerves. While some cranial nerves contain only sensory neurons, most cranial nerves and all spinal nerves contain both motor and sensory neurons. Cranial nerves are responsible for the control of a number of functions in the body. Some of these functions include directing sense and motor impulses, equilibrium control, eye movement and vision, hearing, respiration, swallowing, smelling, facial sensation, and tasting.
Your cranial nerves are pairs of nerves that connect your brain to different parts of your head, neck, and trunk. - V 1 ophthalmic nerve is located in the superior orbital fissure V 2 maxillary nerve is located in the foramen rotundum. V 3 mandibular nerve is located in the foramen ovale.