Vocal cords occur in

Arytenoid cartilages are found in

During swallowing, the glottis can be covered by a thin elastic cartilaginous flap called $A$ to prevent the entry of food into the larynx. The trachea is a straight tube extending up to the $B$ cavity, which divides at the level of the $5^{th}$ thoracic vertebra into right and left primary $C$. Choose the correct option for $A, B$, and $C$ from the given four options to complete the above statement with reference to the $NCERT$ textbook.

Identify the odd one out from the following structures.

The lungs are covered by a double-layered membrane known as the pleura. What is the inner layer,which is in contact with the lung surface,called?

Taeniae are found in: