Term
| Major features of caudal medulla |
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Definition
1. Nuc. gracilis 2. Nuc. cuneatus 3. Pyramid 4. Obscured anterior median fissure 5. Central canal (cont w/ that of the spinal cord) |
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Term
| Major features of rostral medulla |
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Definition
1. 4th ventricle 2. Hypoglossal nucleus 3. Dorsal motor nucleus of the vagus 4. Pyramids 5. Olives |
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Term
| Major features of caudal pons |
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Definition
1. Basis pontis 2. Cerebellum 3. Brachium pontis (middle cerebellar peduncle) |
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Term
| Major features of rostral pons |
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Definition
1. 4th ventricle (rostral end) 2. Brachium conjunctivum (superior cerebellar peduncle) 3. Basis pontis |
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Term
| Major features of caudal medbrain |
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Definition
1. Cerebral aqueduct 2. Periaqueductal gray 3. Inferior colliculus 4. Cerebral peduncle |
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Term
| Major features of rostral midbrain |
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Definition
1. Cerebral aqueduct 2. Superior colliculus 3. Cerebral peduncle 4. Interpeduncular fossa 5. Substantia nigra |
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Term
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Definition
Location: Rostal midbrain
Innervation:
1. All ipsi extraocular muscles except LR, SO
2. Levator palpebra superioris
Lesion:
1. "Down and out" - lat. strabismus, diplopia
2. Ptosis |
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Term
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Definition
Location:
Innvervation:
1. Contra SO (down @add)
Lesion:
1. Vertical diplopia, difficulty moving eye downward in the adducted position |
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Term
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Definition
Location: caudal pons
Innervation:
1. Ipsi LR
2. Contra oculomotor nucleus MR
Lesion: Laze gaze palsy |
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Term
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Definition
Location: medulla (caudal/rostral)
Innervation: tongue muscles
Lesion: deviation of tongue to the same side as lesion |
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Term
| Visceral motor (autonomic) |
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Definition
| EW, superior salivory, inferior salivory, dorsal motor nucleus of the vagus, ambiggus (small) |
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Term
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Definition
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Term
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Definition
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Term
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Definition
Location: caudal pons
Innervation: facial muscles
Lesion: ipsi facial paralysis or weakness |
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Term
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Definition
Location: caudal pons and down; cell body in trigeminal ganglion.
Func: pain and temperature (~spinothalamic tract)
Division: oral, interpolar, and caudal (esp imp for temp)
-X-> ascend with spinothalamic tract --> VPM |
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Term
| Main (principal) sensory nucleus |
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Definition
Location: mid pons
Func: discriminative tactile and proprioceptive sensation (~dorsal column)
-X-> ML --> thalamus... |
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Term
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Definition
Location: midbrain and rostral pons
Func: IA afferents from muscle spindles of the muscles of mastication and from mechanoreceptors in the gums, teeth, and hard palate.
Cell body in mesencephalic trigeminal nucleus. |
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Term
| Nucleus of the solitary tract |
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Definition
Location: medulla
Func:
Rostral part: gustatory sense (VII, IX, X)
Caudal parts: cardiovascular and resp reflexes (IX, X) |
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