Question

A B C D

• A. A
• B. B
• C. C
• D. D

Answer 1

Answer: (D)

D

Answer 2

The given image displays a sagittal view of the human head and neck, illustrating parts of the respiratory and digestive systems. The labels A, B, C, and D point to specific anatomical structures:

• A: This label points to the nasopharynx, the uppermost part of the pharynx, located behind the nasal cavity and above the soft palate. It serves primarily as a respiratory passage.
• B: This label points to the oropharynx, the middle part of the pharynx, located behind the oral cavity, extending from the soft palate to the epiglottis. It serves both respiratory and digestive functions.
• C: This label points to the laryngopharynx (also known as the hypopharynx), the lowermost part of the pharynx, extending from the epiglottis to the esophagus posteriorly and the larynx anteriorly. It also serves both respiratory and digestive functions. The blue circle near C highlights the trachea (windpipe), which is anterior to the esophagus and inferior to the larynx.
• D: This label points to the epiglottis, a leaf-shaped flap of elastic cartilage located at the base of the tongue. Its crucial function is to cover the opening of the larynx (glottis) during swallowing, preventing food and liquids from entering the trachea and lungs.

The question asks to identify the labels A, B, C, D. Assuming the implicit question is "Which of the following labels represents the epiglottis?", then the correct answer would be D.

The image displays a cross-section of the human head and neck.

• A is the nasopharynx.
• B is the oropharynx.
• C is the laryngopharynx, and the blue circle indicates the trachea.
• D is the epiglottis.

Therefore, D is the most likely intended answer.