Term
| What are the boundaries of the mid and upper pons region? |
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Definition
| Level of trigeminal nerve entry to the superior pontine sulcus |
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Term
| Which branch of CN V (trigeminal n.) contains the motor root? |
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Definition
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Term
| The mandibular branch of CN V (trigeminal n.) sends SVE motor innervation to what structures? |
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Definition
| Muscles of mastication, tensor tympani, tensor palatini, mylohyoid, and anterior belly of digastric |
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Term
| Where is the motor nucleus of CN V (trigeminal n.) located? |
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Definition
| Under the superior cerebellar peduncle medial to the chief sensory nucleus |
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Term
| Is motor innervation by the mandibular branch of CN V (trigeminal n.) bilateral, contralateral, or ipsilateral? |
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Definition
| Crosses bilaterally, initially contralateral deficit eventually recovers |
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Term
| What sensory functions are carried via the trigeminal ganglia? |
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Definition
| Discriminative touch to mobile head structures, protopathic (pressure) touch, pain, temp |
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Term
| How are the V1, V2, V3 dermatomes of the trigeminal n. organized? |
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Definition
| V1 = scalp to below nose, V2 = temple to upper lip, V3 = temple to chin |
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Term
| The spinal nucleus of CN V is primarily concerned with what type of GSA innervation from the face? |
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Definition
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Term
| The spinal nucleus receives sensory information from what cranial nerves? |
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Definition
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Term
| What are the three divisions of the spinal nucleus? |
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Definition
| Pars oralis, pars interpolaris, pars caudalis |
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Term
| The pars oralis division of the spinal nucleus is primarily concerned with what? |
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Definition
| Protopathic (pressure) touch |
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Term
| The pars interpolaris division of the spinal nucleus is primarily concerned with what? |
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Definition
| Touch, some pain and temp in the teeth |
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Term
| The pars caudalis division of the spinal nucleus is primarily concerned with what? |
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Definition
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Term
| What is the equivalent of the dorsal column nuclei for the face (discriminitave touch and pressure)? |
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Definition
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Term
| What makes up the primary sensory nucleus? |
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Definition
| Pontine trigeminal nucleus, trigeminal principle nucleus, chief sensory nucleus of CN V |
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Term
| What are the boundaries of the mesencephalic nucleus? |
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Definition
| Extends rostral beneath lateral floor of fourth ventricle up to the caudal midbrain |
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Term
| What is the function of the mesencephalic nucleus? |
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Definition
| Primarily concerned with stretch and pressure proprioception for muscles involved in mastication and the bite reflex (projects to motor nucleus of CN V) |
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Term
| CN V (trigemina n.) sensory nuclei for what ascending tracts? |
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Definition
| Ventral and dorsal trigeminal tracts |
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Term
| Which tract formed by the sensory nuclei of CN V crosses? |
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Definition
| Ventral trigeminal tract crosses, dorsal does not |
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Term
| What supplies blood to the upper pons? |
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Definition
| Primarily by branches of the basilar artery, upper levels also supplied by superior cerebellar artery |
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