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Which region in the large intestine absorbs fluids and salts that remain after intestinal digestion?

A.

Cecum

B.

Ascending colon

C.

Rectum

D.

Descending colon

Answer and Explanation

The Correct Answer is A

A. Cecum: The cecum is the first part of the large intestine, where fluids and salts are absorbed after digestion in the small intestine.

B. Ascending colon: The ascending colon continues the process of absorbing water and salts but starts after the cecum.

C. Rectum: The rectum stores feces and plays little role in fluid and salt absorption.

D. Descending colon: While the descending colon absorbs water, much of the absorption occurs earlier in the large intestine, primarily in the cecum.


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Related Questions

Correct Answer is C

Explanation

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.

Correct Answer is D

Explanation

A. Bone marrow: The bone marrow is primarily responsible for the production of blood cells, including red blood cells, rather than their removal.

B. Tonsils: The tonsils are part of the immune system and help filter pathogens but are not primarily involved in removing old red blood cells.

C. Thymus: The thymus is involved in the maturation of T-lymphocytes (T-cells) and does not have a role in filtering blood or removing red blood cells.

D. Spleen: The spleen filters the blood, removes old and damaged red blood cells, and helps in the immune response by filtering pathogens.

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