What is the infraglottic larynx?
The infraglottic cavity is the portion of the larynx situated below the laryngeal ventricles and the rima glottidis.
What are the 3 parts of the larynx?
The internal space of the larynx is wide in the superior and inferior parts but narrows in the middle, forming a section named glottis, and dividing all the spaces into three sections: supraglottic, glottis, and infraglottic. The vocal cords, the glottis, and the larynx ventricles comprise the glottic space.
Where are arytenoids located?
The arytenoid cartilage is located on the dorsal (back) side of the larynx above the cricoid lamina, a signet ring-shaped cartilage that lies near the bottom of the larynx.
What are the 4 parts of the larynx?
The larynx (voice box) consists of four basic anatomic components:
- A cartilaginous skeleton.
- Intrinsic muscles.
- Extrinsic muscles.
- A mucosal lining.
What happens when the recurrent laryngeal nerve is damaged?
Injury to the recurrent laryngeal nerve has the potential to cause unilateral vocal cord paralysis. Patients with this typically complain of new-onset hoarseness, changes in vocal pitch, or noisy breathing.
Where is the Aryepiglottic fold located?
The aryepiglottic folds are triangular folds of mucous membrane of the larynx. They enclose ligamentous and muscular fibres. They extend from the lateral borders of the epiglottis to the arytenoid cartilages, hence the name ‘aryepiglottic’.
What are the 9 cartilages of the larynx?
The walls are made of 9 pieces of cartilage. The thyroid cartilage, epiglottis and cricoid cartilage are single pieces; the arytenoid, cuneiform and corniculate cartilages are paired. The arytenoids are vital since the vocal cords themselves are attached there at one end.
What is the voice box called?
The area of the throat containing the vocal cords and used for breathing, swallowing, and talking. Also called larynx.
What is the function of the arytenoids?
Structure and Function The arytenoid cartilages help move the vocal folds allowing tension, relaxation, or approximation of these because the vocal folds, being attached to the arytenoids, move along with them.
What happens when arytenoids move?
At these joints, the vocal cords can come together, move apart, tilt anteriorly or posteriorly, and rotate. These movements help control the functions of the larynx such as the pitch of the sound. The arytenoids also help in keeping the airway through the larynx open. This allows air to pass over the vocal cords.
What are the main parts of the larynx?
The larynx is often divided into three sections: sublarynx, larynx, and supralarynx. It is formed by nine cartilages that are connected to each other by muscles and ligaments.
Which recurrent laryngeal nerve is more vulnerable to damage?
right recurrent laryngeal nerve
The right recurrent laryngeal nerve is more susceptible to damage during thyroid surgery because it is close to the bifurcation of the right inferior thyroid artery, variably passing in front of, behind, or between the branches.
Where does the larynx end and the infraglottic end?
The larynx ends at the bottom of the cricoid cartilage and it becomes continuous with the trachea here. This is the infraglottic compartment.
What is the infraglottic cavity?
The infraglottic cavity is the portion of the larynx below the laryngeal ventricles and the rima glottidis.
How are the cartilages of the larynx interconnected?
The cartilages of the larynx are interconnected to each other and to the hyoid bone and trachea by a number of ligaments and fibrous membranes. The extrinsic ligaments and membranes are outside the inner tube of the fibroelastic tissue of laryngeal cavity.
What is the anatomy of the larynx?
The Anatomy of the Larynx 1 Anatomy. The larynx is a complex band of cartilage, ligament, and muscle as well as a mucous membrane. 2 Function. As noted above, the larynx primarily is an organ associated with vocalization and making sound. 3 Associated Conditions. A number of conditions can affect this part of the body. 4 Tests.