Which process involves the use of nutrients inside cells?

The primary site for absorption of water by the digestive system is the:

Rationale: The colon (large intestine) is the primary site for water absorption, consolidating waste into feces.

The loop of Henle pumps sodium ions from the ascending arm to the descending. What is this called?

Rationale: The countercurrent multiplier in the loop of Henle concentrates urine by moving sodium ions.

Which process matches the definition: The uptake of substances by the GI tract?

Rationale: Absorption is the process by which nutrients are taken up from the GI tract into the bloodstream.

Bilirubin and biliverdin are formed in-

Rationale: Bilirubin and biliverdin are bile pigments formed in the liver from hemoglobin breakdown.

Match: Lacteal

Rationale: Lacteals are lymphatic capillaries within the villi that absorb dietary fats.

Digestive System Mcq Questions