Neck — Flashcards

Flashcard 121: The muscle of whispering is the _____

Answer: Lateral cricoarytenoid

Flashcard 122: Lymphatics of vocal cord drains into _____

Answer: nowhere

Flashcard 123: The contents of the carotid sheath from lateral to medial are _____.

Answer: Internal jugular vein, Vagus nerve, Common carotid artery

Flashcard 124: _____ muscle forms the central portion of floor of subclavian triangle.

Answer: Scalenus medius

Flashcard 125: The posterior surface of the anterior arch of the atlas (C1) articulates with the _____ of the axis vertebra (C2).

Answer: Dens (Odontoid process)

Extra: This forms the median atlanto-axial joint, which is a pivot-type synovial joint. The dens is held in place against the atlas by the transverse ligament of the atlas.

Flashcard 126: The **suprasternal space of _____** contains: - **Jugular venous arch** (formed by the anterior jugular veins) - Sternal heads of the right and left sternocleidomastoid muscles - Lymph nodes and the interclavicular ligament

Answer: Burns

Flashcard 127: Name the nerve loop in the cervical plexus that supplies the infrahyoid muscles (sternohyoid, sternothyroid, and omohyoid).

Answer: Ansa cervicalis

Extra: The ansa cervicalis is a loop of nerves (C1-C3) that is part of the cervical plexus. It consists of a superior root (C1) and an inferior root (C2-C3) and supplies the infrahyoid muscles (sternohyoid, sternothyroid, and omohyoid). Note that the thyrohyoid is supplied by C1 fibers via the hypoglossal nerve, not the ansa cervicalis directly.