Question

The diagram represents the human larynx. Choose the correct combination of labelling from the options given below.

A) A- Larynx, B- Parathyroid, C- Tracheal cartilage, D- Trachea
B) A- Naso Larynx, B Thyroid, C Tracheal cartilage, D- Trachea
C) A- Trachea, B- Thyroid, C- Bronchiole, D- Tracheal cartilage
D) A- Epiglottis, B- Thyroid, C- Tracheal cartilage, D- Trachea
E) A- Epiglottis, B- Parathyroid, C- Trachea, D- Tracheal Cartilage

Answer 1

Hint: The larynx is also known as the voice box which is the passage for the air between the pharynx and the trachea. It enlarges from the fourth to the sixth vertebral levels. The larynx is frequently divided into three sections such as the sub larynx, larynx, and the supra larynx.

Complete answer:
A. The Epiglottis is attached with the hyoid bone by an elastic band; the hyoepiglottic ligament enlarges from the anterior surface of the epiglottis to the upper border of the body of the hyoid bone. The glossoepiglottic folds of the mucous membrane.
B. The thyroid gland is the biggest gland and it is a butterfly-shaped organ located in the base of the neck. It releases the hormone that controls the metabolism the way a body uses the energy.
C. In the trachea, there are tracheal rings which are also known as the tracheal cartilages. The cartilage is strong and flexible tissue. The tracheal cartilage helps to support the trachea by allowing it to move during the breathing.
D. The trachea is also called the windpipe. It is a cartilaginous tube that connects the larynx to the bronchi of the lungs and allows the passage of air, and hence is present in almost all air-breathing animals with the lungs. The trachea enlarges from the larynx and branches into the two primary bronchi.
Therefore, the correct answer is option D.

Additional information: The larynx is the organ of voice found at the upper part of the air passage. It is present between the trachea and the root of the tongue. Its vertical extent corresponds to the fourth, fifth, and sixth cervical vertebræ, but it is placed higher in the female and also during childhood. The Symington found that in the infants between six and twelve months of age the tip of the epiglottis was a little above the level of the fibrocartilage between the odontoid process and the body of the axis and that between the infancy and the adult life the larynx descends for a distance equal to two the vertebral bodies and two intervertebral fibrocartilages.

Note: The larynx plays an important role as its protecting function; it prevents the foreign objects from entering the lungs by coughing and other reflexive actions. The cough starts by a deep inhalation through the vocal folds which are followed by the elevation of the larynx and the tightly closing of the vocal folds. The throat clearing is less violent than the coughing, but it is a similar increased respiratory effort countered by the tightening of the laryngeal musculature.