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Where are the tonsils located?

A.

Trachea

B.

Esophagus

C.

Pharynx

D.

Larynx

Answer and Explanation

The Correct Answer is C

A. Trachea: The trachea is the airway that leads to the lungs, but it does not contain tonsils.

B. Esophagus: The esophagus is the tube that connects the throat to the stomach, and it does not contain tonsils.

C. Pharynx: The tonsils are located in the pharynx, which is the region of the throat behind the mouth and nasal cavity. They play a role in the immune system by trapping pathogens that enter the body through the mouth and nose.

D. Larynx:  The larynx is the voice box, located below the pharynx, and does not house tonsils.


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Related Questions

Correct Answer is A

Explanation

A. It is the air in the lungs after maximal inhalation: Total lung capacity (TLC) refers to the total amount of air the lungs can hold after maximum inhalation.

B. It is the quantity of air that a person can move into or out of the lungs: This defines vital capacity, not total lung capacity.

C. It is the amount of air that remains in the lungs after a normal tidal expiration: This describes functional residual capacity, not TLC.

D. It is the maximum volume of air that can be exhaled from the lungs after maximum inhalation: This is the definition of vital capacity (VC), not total lung capacity.

Correct Answer is C

Explanation

A. Parietal Cell: Parietal cells are responsible for secreting hydrochloric acid (HCl) and intrinsic factor, not pepsinogen. HCl activates pepsinogen into pepsin.

B. Mucous Neck Cell: Mucous neck cells secrete mucus to protect the gastric lining but do not secrete pepsinogen.

C. Chief Cell: Chief cells (also known as zymogenic cells) are specialized cells in the stomach that secrete pepsinogen, the inactive precursor of the digestive enzyme pepsin.

D. Enteroendocrine Cell: Enteroendocrine cells secrete hormones like gastrin, which regulates digestive processes, but they do not secrete pepsinogen.

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