Laryngeal-tracheal groove

The laryngeal-tracheal groove (sulcus laryngotrachealis, lne) is a groove located between the thyroid cartilage of the larynx and the first ring of the trachea. It marks the boundary between the larynx and trachea.

This groove contains the membranous part of the larynx. It consists of connective tissue and is involved in connecting the larynx to the trachea.

The laryngeal-tracheal groove plays an important role in the functioning of the respiratory system. Due to the presence of the membranous part in this area, the mobility of the larynx is ensured during swallowing and phonation. At the same time, its connection with the relatively motionless trachea is not disrupted.

Thus, the laryngeal-tracheal groove anatomically delimits the larynx and trachea, but functionally ensures their relationship.

Where does the nosebleed go? Into the trachea. And to prevent bleeding, two grooves are formed and between them there is delicate and soft connective tissue, which is connected by blood immediately after the formation of injuries (including fresh ones). And then there is no more blood. And the connective tissue remains connective tissue in that sense (that is, its essence does not change due to bleeding), but it is already dry, hard, since there is no hemodynamics. That is why this tissue is most often called “fibrous”.

With age, these grooves develop completely, are closed with fibrins, and we see them with sore throat (farin