What passes through the thyrohyoid membrane?
What passes through the thyrohyoid membrane?
Lymph drainage from above the vocal folds travels along the superior laryngeal artery, passing through the foramen in the thyrohyoid membrane, and drain into the deep cervical lymph nodes at the bifurcation of the common carotid artery.
What is the thyrohyoid ligament?
The lateral thyrohyoid ligament (lateral hyothyroid ligament) is a round elastic cord, which forms the posterior border of the thyrohyoid membrane and passes between the tip of the superior cornu of the thyroid cartilage and the extremity of the greater cornu of the hyoid bone.
What is the Triticeal cartilage?
The triticeal cartilage (TC) is a small oval-shaped cartilage found within the lateral border of the thyrohyoid membrane between the greater horn of the hyoid bone and the superior horn of the thyroid cartilage (SHTC) (Fig. 1). Like the thyroid and cricoid cartilages, the TC is composed of hyaline cartilage [9].
What Innervates the Geniohyoid?
Innervation. The geniohyoid muscles are innervated by a branch of the ventral ramus of C1 from the cervical plexus which courses with the hypoglossal nerve in to the floor of the mouth.
What is quadrate membrane?
55247. Anatomical terminology. The quadrangular membrane is a layer of submucosa. It contains the cuneiform cartilages. The membrane runs between the lateral aspects of the epiglottis and arytenoid cartilages on each side.
What is Conus Elasticus?
The conus elasticus (or elastic cone) is the lateral portion of the cricothyroid ligament. The lateral portions are thinner and lie close under the mucous membrane of the larynx; they extend from the superior border of the cricoid cartilage to the inferior margin of the vocal ligaments, with which they are continuous.
What is Corniculate cartilage?
The corniculate cartilages (cartilages of Santorini) are two small conical nodules consisting of elastic cartilage, which articulate with the summits of the arytenoid cartilages and serve to prolong them posteriorly and medially.
What Innervates Thyrohyoid muscle?
The thyrohyoid muscles are innervated by a branch of the ventral ramus of C1 from the cervical plexus, which courses with the hypoglossal nerve. The nerve fibers are thus not from the hypoglossal nucleus.
What is the function of the Geniohyoid?
The geniohyoid muscle is one of the suprahyoid muscles of the neck that is innervated by the ventral ramus of C1. Geniohyoid draws the hyoid bone up and forward during mastication and assists the opening of the mandible.
How is quadrate membrane formed?
It arises from the lateral margins of the epiglottis and adjacent thyroid cartilage near the angle. The fibers course posteriorly downward and attach to the corniculate cartilages and the lateral surfaces of the arytenoids. The free superior margins of the quadrangular membranes form the aryepiglottic folds.
What does the Hyothyroid membrane do?
The thyrohyoid membrane (or hyothyroid membrane) is a broad, fibro-elastic sheet of the larynx. It connects the upper border of the thyroid cartilage to the hyoid bone.
What is the thyrohyoid membrane?
The thyrohyoid membrane (or hyothyroid membrane) is a broad, fibro-elastic sheet of the larynx . The thyrohyoid membrane is attached below to the upper border of the thyroid cartilage and to the front of its superior cornu, and above to the upper margin of the posterior surface of the body and greater cornu of the hyoid bone.
What does the thyrohyoid do?
Master and incorporate the high yield facts to memory, and review them easily by using Kenhub’s muscle anatomy reference charts! Thyrohyoid has two major functions. Firstly, it acts in conjunction with the other infrahyoid muscles and depresses the hyoid bone, which is helpful after swallowing has taken place.
What does the median thyrohyoid ligament do?
It is separated from the hyoid bone by a mucous bursa, which allows for the upward movement of the larynx during swallowing. Its middle thicker part is termed the median thyrohyoid ligament. Its lateral thinner portions are pierced by the superior laryngeal vessels and the internal branch of the superior laryngeal nerve.
What is the middle hypothyroid membrane called?
The middle, thicker part of the thyrohyoid membrane is called the middle hypothyroid ligament. The membrane’s anterior (front) surface is near the omohyoid, thyrohyoid, and sternohyoid muscles.
