Zoology - Breathing and Exchange of Gases Question with Solution | TestHub

The larynx is a cartilaginous box which helps in sound production, and hence, it is called the soundbox. During swallowing, glottis can be covered by a thin elastic cartilaginous flap called epiglottis to prevent the entry of food into the larynx. This muscular and cartilaginous structure is lined with a mucous membrane. This structure is situated at the top of the trachea and below the root of the tongue and the hyoid bone.
The trachea or windpipe is lined with ciliated pseudostratified columnar epithelium with mucous secretion. In the trachea, there are cartilaginous tracheal rings for flexibility. The pharynx is a muscular tissue without cartilages.