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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)