Ascending Sensory Pathways 2 Flashcards
Where are the Cranial Nerve Nuclei located in the brainstem?
Tegmentum
Motor Nuclei are more Medial than sensory nuclei
Which area of the Head does the Trigeminal Nerve (CN5) provide sensation from?
Face, Nose, Scalp, Dura Mater
Which area of the Head does the Facial Nerve (CN7) provide sensation from?
External Ear
Which area of the Head does the Glossopharyngeal Nerve (CN9) provide sensation from?
Middle Ear, Pharynx, Posterior 1/3 Tongue
Which area of the Head does the Vagus Nerve (CN10) provide sensation from?
Auditory Canal, Pharynx, Larynx, Oesophagus
Which sensory pathway does sensation from the head travel in?
Trigeminal Sensory Pathway
Trigeminothalamic Tract
Divisions of the Trigeminal Nuclei, and where are they located?
Mesencephalic Nucleus (Midbrain)
Pontine/ Chief Sensory Nucleus (Pons)
Spinal Nucleus (Medulla)
Where do primary neurons delivering TOUCH AND PRESSURE sensation from the face synapse in the Trigeminal Nucleus?
ROSTRAL Spinal Nucleus
Where do primary neurons delivering PAIN AND TEMPERATURE sensation from the face synapse in the Trigeminal Nucleus?
CAUDAL Spinal Nucleus
How do Touch and Pressure; Pain and Temperature Fibres enter the Trigeminal Nucleus?
Descend in Spinal Tract (Lateral to nuclei)
Where are the cell bodies of Touch and Pressure; Pain and Temperature; Discriminatory Touch primary neurones?
Trigeminal Ganglion
Where do primary neurons delivering 2-POINT DISCRIMINATORY TOUCH sensation from the face synapse in the Trigeminal Nucleus?
Pontine/Chief Sensory Nucleus
Where do primary neurons delivering PROPRIOCEPTION sensation from the face synapse in the Trigeminal Nucleus?
ALONGSIDE the Mesencephalic Nucleus
What nerve is Proprioception mainly delivered in?
Mandibular (CNV3)
Where are the cell bodies of Proprioception primary neurones?
Within the Mesencephalic Nucleus
