Question

Identify X shown in the image below.

• A. X is the trachea; it helps in the passage of food from the buccal cavity.
• B. X is the trachea; it helps in passage of air in and out of the lungs
• C. X is the oesophagus; it carries air in and out of the lungs.
• D. X is the trachea; it has C-shaped cartilage rings for one way passage of food.

Answer 1

The correct option is B X is the trachea; it helps in passage of air in and out of the lungs

The trachea is a part of the respiratory system, whereas the oesophagus is a part of the digestive system.
The oesophagus is also known as the food pipe; it connects the buccal cavity to the stomach.
The trachea, also known as the windpipe, is a cartilaginous tube that connects the larynx to the bronchi of the lungs.