Brain and Neuroanatomy — Flashcards

Flashcard 91: Branches of Mandibular nerve:_____ and lingual nerve of the posterior division are the sensory branches

Answer: Auriculotemporal

Flashcard 92: Purkinje cells in the _____ of the cerebellum project to the fastigial nuclei

Answer: vermis

Flashcard 93: At the _____, 60% of the optic fibers from the nasal half of each retina cross and project into the contralateral optic tracts

Answer: optic chiasm

Flashcard 94: Relations of the lateral ventricle: Inferior hornRoof: _____ of the corpus callosum and tail of caudate Floor: collateral eminence and hippocampus

Answer: tapetum

Flashcard 95: Layers of the cerebellum:Granular layer: contains _____ cells that receive input from parallel fibers and mossy fibers

Answer: Golgi

Flashcard 96: The corticobulbar innervation of facial motoneurons to muscles of the _____ face is bi-lateral

Answer: upper

Flashcard 97: Special Visceral Efferent: fibers from the **Nucleus Ambiguus** travel with _____ to innervate the stylopharyngeus, pharyngeal, laryngeal, and soft palate muscles.

Answer: CN IX and X

Extra: The **Nucleus Ambiguus** provides Special Visceral Efferent (SVE) fibers (branchiomotor) to: 1. **CN IX:** Stylopharyngeus muscle. 2. **CN X:** Muscles of the pharynx, larynx, soft palate (except tensor veli palatini), and upper striated portion of the esophagus. 3. **CN XI (Cranial portion):** These fibers join the vagus nerve. The **sternocleidomastoid and trapezius** muscles are innervated by the **spinal accessory nucleus** (C1-C5/6), not the nucleus ambiguus.

Flashcard 98: Output fibres from thalamus project to the _____ and to the basal nuclei and hypothalamus

Answer: cerebral cortex

Flashcard 99: The length of the intra-_____ part of the optic nerve is 5-9mm

Answer: canalicular

Flashcard 100: At the superior end of the sulcus limitans, a bluish-gray area is produced by a cluster of nerve cells containing _____ pigment called substantia ferruginea

Answer: melanin