Neuro Brainstem Nuclei

Brainstem nuclei, locations, functions

28 cards   |   Total Attempts: 188
  

Cards In This Set

Front Back
Oculomotor nucleus
Location: Midbrain, level of superior colliculus, midline, ventral to cerebral aqueduct
Function: Somatic Motor (eye movements); Para (pupil constriction)
Blood: Paramedian branches of basilar
Edinger-Westphal
Location: Midbrain, level of superior colliculus, medial
Function: contains cell bodies of preganglionic parasympathetic fibers for eye
Blood: Paramedian branches of basilar
Trochlear
Location: Midbrain, level of inferior colliculus, medial
Function: Motor to superior oblique muscle (eye intorsion)
Blood: Basilar
Main Sensory V
Location: Pons, lateral, dorsal
Function: Primary sensory neuron cell bodies for sensation in the face, mouth, sinuses
Blood: Basilar
Motor V
Location: Pons, lateral, dorsal
Function: Muscles of mastication, tensor tympani
Blood: Basilar
Spinal V
Location: Medulla and Pons, lateral/ventral
Function: Crude touch, pain, temperature from the face
Blood: AICA-Basilar/PICA-Vertebral
Mesencephalic V
Location: Midbrain, dorsal/lateral to cerebral aqueduct, bordering periaqueductal gray
Function: Proprioception, Jaw-Jerk reflex
Blood: SCA, proximal PCA
Abducens
Location: Pons, medial, dorsal
Function: Motor to lateral rectus
Blood: Basilar
Facial Motor
Location: Pons, medial-lateral, dorsal
Function: Muscles of facial expression, stapedius
Blood: AICA/Basilar
Vestibular Complex
Location: Medulla/Pons, Floor of 4th ventricle, latera
Function: Vestibular sensation
Blood: AICA/Basilar, PICA/Vertebral
Dorsal and Ventral Cochlear
Location: Pontomedullary junction, dorsal and ventral to inferior cerebellar peduncle, lateral
Function: Hearing sensation from ipsilateral ear
Blood: AICA/Basilar
Nucleus of Solitary Tract
Location: Medulla, lateral to Motor X, Dorsal
Function: Taste (VII, IX, X), Destination for visceral afferents
Blood: PICA/Vertebral
Nucleus Ambiguus
Location: Medulla, mediolateral, dorsoventral
Function: Motor to pharyngeal and laryngeal muscles
Blood: PICA/Vertebral
Dorsal Motor X
Location: Medulla, Dorsal, Medial (just lateral to XII)
Function: Parasympathetic to heart, lungs, digestive tract
Blood: PICA/Vertebral
Hypoglossal
Location: Medulla, Seriously Medial, Dorsal
Function: Motor to tongue
Blood: Vertebral