Anatomy of the Aorta and Carotid System

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Questions and Answers

What is the first and largest branch of the arch of the aorta?

The brachiocephalic trunk.

At what vertebral level does the carotid bifurcation occur?

Near the superior edge of the thyroid cartilage at the C4 vertebra.

Which artery supplies blood to the head and neck?

The common carotid artery.

What structures are contained within the carotid sheath?

The common carotid artery, internal carotid artery, internal jugular vein, and vagus nerve. Signup and view all the answers

How does the left common carotid artery originate?

As a direct branch of the arch of the aorta. Signup and view all the answers

What are the primary branches of the superior thyroid artery?

The primary branches are the infrahyoid branch, sternocleidomastoid branch, superior laryngeal branch, cricothyroid branch, anterior glandular branch, posterior glandular branch, and lateral glandular branch. Signup and view all the answers

What is the anatomical significance of the superior laryngeal branch?

The superior laryngeal branch penetrates the membrana thyrohyoidea with the internal branch of the superior laryngeal nerve and supplies the laryngeal inlet and vestibulum laryngis. Signup and view all the answers

Where does the ascending pharyngeal artery arise and what does it supply?

The ascending pharyngeal artery arises from the posterior aspect of the external carotid artery and supplies the pharynx, prevertebral muscles, middle ear, and cranial meninges. Signup and view all the answers

Describe the path and branches of the lingual artery.

The lingual artery arises from the external carotid artery at the level of the hyoid bone, arches superoanteriorly, and gives off branches including dorsal lingual arteries, deep lingual arteries, sublingual arteries, and a suprahyoid branch. Signup and view all the answers

How does the facial artery navigate through the neck region?

The facial artery branches from the anterior surface of the external carotid artery, passes deep to the stylohyoid and posterior belly of the digastric muscles, and appears at the lower border of the mandible after passing posterior to the submandibular gland. Signup and view all the answers