Triangles of the neck — Flashcards

Flashcard 1: The trunks of the brachial plexus and subclavian artery pass through the anterior and middle _____

Answer: scalenes (scalene triangle)

Flashcard 2: The left sternocleidomastoid (SCM) muscle contracts to turn the head to the _____

Answer: right

Flashcard 3: What is the chamber of the eye located between the cornea and the iris?

Answer: Anterior chamber

Flashcard 4: An aberrant right subclavian artery causes the right recurrent laryngeal nerve to become _____

Answer: non-recurrent

Flashcard 5: A persistent cervical sinus leads to a branchial cleft cyst, which appears in the _____ neck

Answer: lateral

Flashcard 6: CN IX (Cranial Nerve 9) name?

Answer: Glossopharyngeal nerve

Extra: Functions of Cranial Nerve IX (Glossopharyngeal): 1. Motor: Stylopharyngeus muscle. 2. Sensory: Posterior 1/3 of tongue, tonsils, pharynx, middle ear, carotid body/sinus. 3. Taste: Posterior 1/3 of tongue. 4. Parasympathetic: Parotid gland (via otic ganglion). 5. Reflexes: Afferent limb of the gag reflex.

Flashcard 7: parafollicular cells (C-cells) of thyroid

Answer: neural crest

Flashcard 8: Embryological origin of the bones of the skull:

Answer: Neural crest cells and Paraxial mesoderm

Extra: The bones of the skull have dual embryological origins: 1. **Neural Crest Cells:** Form the bones of the face (viscerocranium) and parts of the neurocranium (e.g., frontal bone, sphenoid). 2. **Paraxial Mesoderm:** Forms the rest of the neurocranium (e.g., parietal bones, occipital bone).

Flashcard 9: Into what vein do the dural venous sinuses empty?

Answer: internal jugular vein

Flashcard 10: Olfactory deficits are often caused by head injuries that fracture the _____ of the ethmoid bone

Answer: cribriform plate

Extra:  Watch associated Bootcamp video [https://app.bootcamp.com/med-school/gross-anatomy/videos/external-examination-of-the-brain?index=12] https://onlinemeded.org/spa/neurology?ref=anki