Question

In the larynx of rabbit, which one of the following is the biggest cartilage?
A. Arytenoid cartilage
B. Cricoid cartilage
C. Thyroid cartilage
D. Tracheal cartilage

Answer 1

Hint: Cartilage is the connective tissue. It forms the skeleton of mammals before bone formation. It has a slightly pliable matrix due to chondroitin salts. Larynx is the hollow, tubular structure that is connected to the trachea and transports air from nostrils to the trachea. It is also known as a sound box as it contains our vocal cords and is responsible for sound production.

Complete Step by Step Answer:
Three types of cartilages are present in the larynx:- cricoid, thyroid and epiglottis. The thyroid cartilage forms a wall in front of the larynx and protects the vocal cords. They are the largest cartilage present in the larynx. Thyrohyoid membrane is present within the thyroid cartilage that connects it with the hyoid bone.
The cricoid cartilage is present below the thyroid cartilage in the larynx and made up of hyaline cartilage. It helps in opening and closing of vocal cords during sound production.
Arytenoid cartilages are the small cartilages that are shaped as three-sided pyramids. They are present towards the rarer part of the larynx and are essential for the positioning and adjusting of the vocal cords during speech.
Epiglottis is the cartilaginous flap that covers the larynx so that the food does not enter the windpipe during eating.
The trachea consists of many V-shaped rings of cartilage that supports the trachea and ensures that the air passage does not collapse.
Thus, the correct answer is option C:- Thyroid cartilage

Note: The rabbit larynx is much smaller. The histology of the rabbit larynx is similar to that of humans. The larynx of rabbit is useful for hybrid in vivo/ex vivo studies and in histological studies of the vocal folds.