Cranial Nerve Nuclei
Terms
undefined, object
copy deck
- Oculomotor Nuclear Complex
-
-midbrain (by superior colliculus)
-Motor nucleus to superior, medial, and inferior rectus and inferior oblique muscles - Edinger-Westphal nucleus
-
-dorsal to oculomotor complex
-preganglionic parasympathetic to constrictor pupillae - Trochlear nucleus
-
-beneath inferior colliculus (midbrain)
-motor to superior oblique
-after exiting brainstem, fibers decussate - Mesencephalic Nucleus of V
-
-midbrain and pons
-sensory (muscle sense info from muscle spindles), contains ganglion cells
-project to motor nucleus of V and spinal nucleus of V (analogous to Clarke's Column) - Motor Nucleus of V
-
-pons
-motor to muscles of mastication via mandibular division of V.
-medial to chief sensory nucleus of V - Chief Sensory Nucleus of V
-
-pons
-sensory for fine touch and pressure of face (analogous to dorsal column nuclei)
-projects to contralateral VPM nucleus of thalamus - Nucleus of Spinal Tract of V
-
-pons, medulla
-continuous with dorsal horn
-receives pain and temperature afferents from face
-projects to contralateral VPM nucleus of thalamus
-analogous to lissauer's tract, substantia gelatinosa, nucleus proprius of s.c. - Abducens Nucleus
-
-pons
-motor nucleus for lateral rectus muscle
-nestled in genu of facial nerve - Facial Nucleus
-
-pons
-motor to muscles of facial expression
-fibers loop around the abducens nucleus before exiting the brainstem - Vestibular Nuclei
-
-pons
-complex of 4 nuclei in lateral floor of 4th ventricle
-descending fibers to medial and lateral vestibulospinal tract
-ascending fibers to medial longitudinal fasciculus (MLF) to ocular nuclei, thalamus, and cerebellum - Cochlear Nuclei
-
-pons
-auditory input from CN VII
-output to superior olivary nucleus via trapezoid body - Nucleus of Tractus Solitarius
-
-medulla
-taste from VII, IX, X
-visceral autonomic afferents from IX and X
-output to dorsal motor nucleus of X, taste to thalamus, reticular formation - Dorsal Motor Nucleus of X
-
-medulla
-preganglionic parasympathetic motor mucleus. innervates major body organs.
-located dorsolateral to hypoglossal nucleus - Nucleus Ambiguus (Ventral Motor Nucleus of X)
-
-medulla
-branchiomotor fibers from IX and X to larynx, pharynx, and soft palate - Hypoglossal Nucleus
-
-medulla
-motor to tongue muscles