CN V Trigeminal Pathways Flashcards
CN V Trigeminal - Somatosensory Pathways - Light Touch - 1st Order neuron soma in?
Trigeminal ganglion outside mid pons
CN V Trigeminal - Somatosensory Pathways - Light Touch - 2nd Order neuron somas located in?
Main sensory nucleus in lateral mid pons
CN V Trigeminal - Somatosensory Pathways - Light Touch - 3rd Order neuron cell bodies located in the?
Ventral posteromedial nucleus of the thalamus
CN V Trigeminal - Somatosensory Pathways - Light Touch - Axons of 2nd order neurons cross midline and ascend to the thalamus via the?
Ventral trigeminothalamic tract (exception of touch inside the mouth)
CN V Trigeminal - Somatosensory Pathways - Light Touch - Axons for touch inside the mouth remain uncrossed and ascend in the dorsal trigeminothalamic tract - T/F
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CN V Trigeminal - Somatosensory Pathways - Light Touch - 3rd order neurons project to the face region of the?
Primary somatosensory cortex on the postcentral cortex of the parietal lobe
CN V Trigeminal - Somatosensory Pathways - Proprioception - 1st order neuron somas for all proprioception in?
Mesencephalic nucleus at levels of caudal and rostral medial midbrain.
CN V Trigeminal - Somatosensory Pathways - Proprioception - 2nd order neuron somas located in?
Main sensory nucleus in min pons
CN V Trigeminal - Somatosensory Pathways - Conscious Proprioception - 3rd order neuron somas located in the?
Ventral posteromedial nucleus of the thalamus
CN V Trigeminal - Somatosensory Pathways - Conscious Proprioception - Axons of 2nd order neurons cross midline and ascend to the thalamus via the?
Ventral Trigeminothalamic tract
CN V Trigeminal - Somatosensory Pathways - Conscious Proprioception - 3rd order neurons project to the face region of the?
Primary somatosensory cortex on the postcentral gyrus of the parietal lobe
What is the Jaw Jerk Reflex - Afferent neuron somas located in?
Mesencephalic nucleus in the medial dorsal mdibrain
What is the Jaw Jerk Reflex - Synapses on LMNs in the?
Motor nucleus of CN V in the lateral dorsal mid pons
What is the Jaw Jerk Reflex - Axons of LMNs travel in?
CN V3 Mandibular division trigeminal to muscles of mastication
CN V Trigeminal - Somatosensory Pathways - Nociception/Temperature - 1st order neuron somas in?
Trigeminal ganglion outside the mid pons
CN V Trigeminal - Somatosensory Pathways - Nociception/Temperature - 2nd order neuron somas in?
Spinal Trigeminal nucleus/spinal of CN V in lateral caudal medulla
CN V Trigeminal - Somatosensory Pathways - Nociception/Temperature - 3rd order neuron somas located in the?
Ventral Posteromedial nucleus of the thalamus
CN V Trigeminal - Somatosensory Pathways - Nociception/Temperature - Central axon of 1st order neuron descends posterolaterally in the?
Spinal Trigeminal tract
CN V Trigeminal - Somatosensory Pathways - Nociception/Temperature - The spinal trigeminal tract goes into the?
Caudal medulla/upper cervical spinal cord where it synapses with 2nd order neuron in the spinal trigeminal nucleus
CN V Trigeminal - Somatosensory Pathways - Nociception/Temperature - Face - Axon of 2nd order neuron crosses midline and ascends to the ventral posteromedial nucleus of the thalamus via the?
Ventral Trigeminothalamic tract situated medially throughout the medulla and caudal pons
CN V Trigeminal - Injury - Ipsilateral paresis/paralysis of muscles of?
Mastication
CN V Trigeminal - Injury - Ipsilateral loss of sensation in areas of?
Nerve distribution
CN V Trigeminal - Injury - Could also see what reflex impaired?
Jaw Jerk
