Anatomy and Cell Biology 3319 Chapter Notes -Superior Cerebellar Peduncle, Inferior Olivary Nucleus, Facial Nerve
8 Oct 2013
School
Department
Professor
Document Summary
Part of the 4th ventricle lies here. Pyramids: large fiber tracts that descend through the brain stem and spinal cord carrying voluntary motor output from the cerebrum to the spinal cord. Decussation of the pyramids: where pyramidal fibers cross over to the opposite side of the brain. Each cerebral hemisphere control the voluntary movements of the opposite side of the body. Olive: contains and inferior olivary nucleus (large wavy fold of gray matter) Inferior cerebellar peduncles: fiber tracts that connect the medulla to the cerebellum. Cranial nerve viii (8): vestibulocochlear nerve attaches at the junction of the medulla and the pons and is the sensory nerve of hearing and equilibrium. Cranial nerve ix (9): glossopharyngeal nerve innervates part of the tongue and pharynx. Cranial nerve x: vagus nerve innervates many visceral organs in the thorax and abdomen. Dorsal motor nucleus of vagus, solitary nucleus, and nucleus abiguus. Cranial nerve xi: accessory nerve innervates some muscles of the neck.
