What is a leaf-shaped flap of cartilage located behind the tongue, at the top of the larynx or voice box called?

Epiglottis

The correct answer is Option (4)- Epiglottis

A leaf-shaped flap of cartilage located behind the tongue, at the top of the larynx or voice box, is called the Epiglottis.

Explanation:

The epiglottis is a flexible cartilage structure in the human throat situated at the base of the tongue, just above the larynx. Its primary function is to cover the trachea (windpipe) during swallowing to prevent food and liquids from entering the respiratory tract. The epiglottis helps direct ingested material toward the esophagus, ensuring that it reaches the stomach for digestion and avoids the airway, which leads to the lungs. This protective mechanism helps prevent choking and respiratory issues during the process of swallowing.