Anatomy of head and neck and lymphatics quiz. A B C D E 2 3 1 4 5.

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Anatomy of head and neck and lymphatics quiz

A B C D E

A B C D E

A B C D

A B D C E

A B C D F E G

A tumour in the infratemporal fossa may gain entrance to the orbit through which of the following? A. optic canal (foramen) B. inferior orbital fissure C. pterygoid canal D. ethmoidal sinuses E. superior orbital fissure

Answer: B The infratemporal fossa communicates directly with the orbit via the inferior orbital fissure and the pterygopalatine fossa. The fissure normally carries branches of the maxillary nerve and branches of the infraorbital vessels. The optic canal (a) and superior orbital fissure (e) open into the middle cranial fossa and carry the optic nerve and the oculomotor, trochlear, and abducent nerves. The pterygoid canal (c) connects the middle cranial fossa with the pterygopalatine fossa. The ethmoidal sinuses (d) are mucosa-lined cavities within the ethmoid and adjacent bones. They drain into the nasal cavity.

1. A 24 year old man is being evaluated for airway abnormalities. Palpation of the cricoid cartilage is normally at which vertebral level? A. C2 B. C4 C. C6 D. T1

Answer: C

Histology Shotgun histology lymph node

A B C