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Cranial nerves are the nerves that emerge directly from the brain (including the brainstem), of which there are conventionally considered twelve pairs.Cranial nerves relay information between the brain and parts of the body, primarily to and from regions of the head and neck, including the special senses of vision, taste, smell, and hearing.
Also innervates the sphincter pupillae and the muscles of the ciliary body. IV Trochlear: Motor Dorsal aspect of Midbrain: Located in the superior orbital fissure. Innervates the superior oblique muscle, which depresses, abducts, and intorts the eyeball. V Trigeminal: Both sensory and motor Pons: Three Parts:
The following is a list of nerves in the human body: Location. Distribution of the areas of the sensory roots upon the surface of the body.
The hypoglossal nerve, also known as the twelfth cranial nerve, cranial nerve XII, or simply CN XII, is a cranial nerve that innervates all the extrinsic and intrinsic muscles of the tongue except for the palatoglossus, which is innervated by the vagus nerve. [a] CN XII is a nerve with a sole motor function.
Area of the human body surface innervated by each spinal nerve. Even mammals, including humans, show the segmented bilaterian body plan at the level of the nervous system. The spinal cord contains a series of segmental ganglia, each giving rise to motor and sensory nerves that innervate a portion of the body surface and underlying musculature.
The following diagram is provided as an overview of and topical guide to the human nervous system: Human nervous system. Human nervous system – the part of the human body that coordinates a person's voluntary and involuntary actions and transmits signals between different parts of the body.
Updated July 14, 2016 at 10:12 PM. 10 Body Parts You Didn't Know Had Names. How many of these did you know? Tell us in the comments below! The canthus is where the upper and lower eyelids meet.
In neuroanatomy, the trigeminal nerve (lit. triplet nerve), also known as the fifth cranial nerve, cranial nerve V, or simply CN V, is a cranial nerve responsible for sensation in the face and motor functions such as biting and chewing; it is the most complex of the cranial nerves. Its name (trigeminal, from Latin tri- 'three' and -geminus ...