Week 7: Cranial Nerve Sensory Pathways Flashcards
Olfactory signs will be seen with lesions to which two places?
Nasal cavity and cerebrum
Olfactory bulb projects where?
Uncus and amygdala.
Primary visual pathway location of synapse
lateral geniculate nucleus
Pretectal nucleus function
Processes afferent signals for visual reflexes
Adjacent Pathway to Optic Tract
Crus Cerebri
Trigeminal Nerve Nuclei
Mesencephalic Nucleus, Principle Sensory Nucleus, Spinal Trigeminal Nucleus
The only cranial nerve to have nuclei project at all spinal levels
CN V trigeminal nerve
Mesencephalic Nucleus First Order Cell Bodies Location
Within the CNS
Mesencephalic Nucleus Purpose
Receives proprioceptive information from the jaw
Mesecephalic Nucleus Location
Midbrain and rostral pons
Cranial Nerves of Taste
VII, IX, and XI
Mesencephalic Nucleus is the Afferent Portion of What Reflex?
Jaw jerk
Principle Sensory Nucleus Function
Light touch information to the face
Principle Sensory Nucleus Location
Tegmentum of mid pons
Principle Sensory Nucleus Cranial Nerves
V, VII, IX, and X
Spinal Trigeminal Nucleus Purpose
Pain and temperature information to the face
Spinal Trigeminal Nucleus Range
Dorsolateral mid pons to C5 spinal level
Spinal Trigeminal Nucleus Cranial Nerves
V, VII, IX, and X
Spinal Trigeminal Nerve Fibers Synapse and Cross to Form What?
Trigeminothalamic tract
Facial Nerve Nulei
Solitary nucleus, spinal trigeminal nucleus, and principle sensory nucleus
Facial nerve shares general sensory nuclei with what other nerves?
V, IX, and X
Facial nerve shares special sensory nuclei with what other nerves
IX and X
Adjacent Structures to Facial Nerve
Abducens nucleus, anterolateral system, and spinal nucleus and tract of CN V
Solitary Nucleus Function
Receives taste information from CN VII, IX, and X
Solitary Nucleus Visceral Afferent Function
Receives visceral afferents from airways, heart, lungs, GI system, and pharynx
Solitary Nucleus Blood Pressure Function
Regulates blood pressure and heart rate by way of input from the carotid body and aortic sinus
Adjacent Structures to Solitary Nucleus
Inferior cerebellar peduncle, vestibular Nuclei, spinal nucleus and tract of CN V, dorsal motor nucleus of CN X, and nucleus cuneatus
Solitary Nucleus Location
Caudal pons and rostral medulla
The Four Vestibular Nuclei
Superior, Inferior, Lateral, Medial
Adjacent Structures to Vestibular Nuclei
Inferior cerebellar peduncle, 4th ventricle, solitary nucleus
Cochlear Nuclei Location
Pontomedullary junction
Nuclei of the Glossopharyngeal and Vagus Nerves
Solitary, Spinal Trigeminal, and Principle Sensory
Solitary Nucleus Location
Dorsolateral medulla
Functional Relationship Between Solitary Nucleus and Trigeminal Sensory Nucleus
Special sensory information sent through the solitary nucleus, general sensory sent through the trigeminal sensory nucleus
Blood Supply to the Midbrain
Posterior Cerebral Artery
Blood Supply To the Rostral Pons
Superior Cerebellar, Basilar Artery
Areas Supplied by Short Circumferential Artery
Corticospinal tract and pontine nuclei
Areas Supplied by Paramedian Arteries
Medial longitudinal fasciculus
Areas Supplied by the Superior Cerebellar Artery
Mesencephalic Nucleus, Lateral Lemniscus, Anterolateral System, Medial Lemniscus, Trigeminal Lemniscus, Superior Cerebellar Peduncle
Blood Supply to Caudal Pons
Anterior Inferior Cerebellar Artery
Areas supplied by the anterior inferior cerebellar arteries
Motor nucleus of trigeminal
Principle sensory nucleus of trigeminal
Spinal trigeminal nucleus
Abducens nucleus
Facial nucleus
Solitary Nucleus
Salivatory nucleus
Vestibular Nucleus
Cochlear Nuclei
Anterolateral System
Blood Supply to Rostral Medulla
Posterior Inferior Cerebellar Artery, Vertebral Artery
Areas supplied by the posterior inferior cerebellar arteries
Spinal Trigeminal Nucleus and Tract
Solitary Nucleus and Tract
Vestibular Nuclei
Nucleus ambiguous
Dorsal Motor Nucleus of Vagus
Anterolateral System
Areas supplied by the vertebral arteries
Hypoglossal Nucleus
Medial Lemniscus
Corticospinal Fibers
Blood Supply to the Caudal Medulla
Vertebral Artery, Anterior Spinal Artery, Posterior Spinal Artery
Areas supplied by the vertebral artery
Spinal Trigeminal Tract
Solitary Nucleus
Nucleus Ambiguous
Dorsal Motor Nucleus of Vagus
Spinal Accessory Nucleus
Anterolateral System
Areas supplied by the anterior spinal artery
Hypoglossal Nucleus
Medial Lemniscus
Corticospinal Fibers
Areas supplied by the posterior spinal artery
Nucleus Gracilus
Nucleus Cuneatus