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Psyc/NS&B 275 Neuroanatomy H.M.Sinnamon Version 3 Study Guide for Cranial Nerve Nuclei Know the targets of the motor nuclei and the sources of the afferents to the sensory nuclei. Identify the nucleus on a transverse section of the brainstem in either Brainiac and Watson. General Somatic Efferent = Somatic Motor GSE = SM The group of brainstem motor neurons that resemble the motorneurons of the ventral horn of the spinal cord Hypoglossal nuc tongue muscles Abducent nuc lateral rectus of eye Trochlear nuc Superior oblique of eye Oculomotor nuc Several eye muscles General Visceral Efferent = Visceral Motor GVE = VM The group of premotor neurons that resemble the autonomic neurons of the lateral horn of the spinal cord Dorsal motor vagus smooth & cardiac muscle, glands; thorax; abdomen Inferior salivatory salivatory gland (not on any atlas) Superior salivatory tear and saliva glands (not on any atlas) Edinger-Westphal ciliary ganglion (constricts pupil) Special Visceral Efferent = Special Visceral Motor SVM = SVE The group of motorneurons that control muscles of the neck, head, and face Spinal accessory neck and larynx Ambiguus heart, pharynx, larnyx Facial facial expression muscles Trigeminal motor mastication muscles Special Visceral Afferent = Special Visceral Sensory Solitary (anterior) taste sensations SVA = SVS General Visceral Afferent = General Visceral Sensory Solitary (posterior) visceral sensations GVA = GVS General Somatic Afferent = Somatic Sensory GSA = SS Spinal trigeminal (V) pain, temperature, crude touch Main sensory V active and light touch Mesencephalic nucleus V proprioception The Brainstem Systems Concerned with Special Senses Vestibular System Superior, Lateral, Medial and Inferior nuclei = Vestibular Complex Auditory System Know the pathway from the spiral ganglion to the cortex Dorsal and Ventral Coclear Superior Olive and nucleus of trapazoid body Lateral lemniscus inferior colliculus brachium of inferior colliculus Medial geniculate Auditory cortex (Heschl’s gyrus)