Question

The mammalian trachea and esophagus both connect to the

(A) pharynx.

(B) stomach.

(C) large intestine.

(D) rectum.

Short answer

(A) The statement “pharynx” is true.

(B) The statement “stomach” is false.

(C) The statement “large intestine” is false.

(D) The statement “rectum” is false.

Step-by-step solution

Metabolism

The life process that involves a chemical reaction is called metabolism. Digestion, breathing, and repairing mechanisms are examples of metabolic processes. The minimum energy is required to conduct the metabolism or chemical process. The minimal energy is called the basal metabolic rate.

Explanation of option ‘(A)’

The pharynx is part of the respiratory tract. However, the lower part of the pharynx is connected to the esophagus. It serves as a passage connecting the mouth and nose to the esophagus. Pharynx also connects to the breathing passages called the trachea.

Epiglottis is located behind the larynx and prevents the entry of food into the trachea.

Therefore, the pharynx serves as a passage of food and air connecting to the esophagus and trachea.

Thus, the given option is true

Explanation of option ‘(B)’

The lower end of the esophagus connects to the stomach, but the trachea is not connected to the stomach. The trachea divides to form bronchi.

Therefore, the stomach does not connect to the trachea.

Thus, the given option is false.

Explanation of option ‘(C)’

The large intestine is connected to the small intestine at one end and the anus at the other end.

Therefore, the esophagus and trachea do not attach to the large intestine.

Thus, the given option is false.

Explanation of option ‘(D)’

The rectum is located in the large intestine at the final segment of the colon.

Therefore, the rectum does not show any attachment with the esophagus and trachea.

Thus, the given option is false.