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The bolus is liquefied in the

and it is now called chyme.
Answer and Explanation

The Correct Answer is {"dropdown-group-1":"A"}

A. Stomach: The stomach mixes the food with gastric juices, converting the solid bolus into a semi-liquid substance called chyme.
B. Small intestine: The small intestine receives chyme but does not liquefy the bolus.
C. Mouth: The mouth forms the bolus through mastication and saliva, but it does not produce chyme.
D. Esophagus: The esophagus only transports the bolus via peristalsis and plays no role in liquefying it.


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Related Questions

Correct Answer is D

Explanation

A. Glomerular filtration rate (GFR) will decrease: Low MAP leads to reduced renal perfusion, and until compensatory mechanisms restore pressure, GFR will drop.
B. Net filtration pressure (NFP) will decrease: Low systemic pressure leads to low glomerular hydrostatic pressure, resulting in lower NFP.
C. Blood plasma and extracellular fluids volume will increase: The RAAS pathway, triggered by renin, leads to aldosterone and ADH release, promoting sodium and water retention, thereby increasing fluid volume.
D. Kidney perfusion will increase: Perfusion decreases when MAP is below 80 mmHg, and renin is released because of reduced perfusion, not increased.

Correct Answer is A

Explanation

A. Intrinsic factor: Intrinsic factor, secreted by parietal cells, is essential for vitamin B₁₂ absorption in the ileum. Vitamin B₁₂ is needed for RBC production and hemoglobin synthesis.
B. Gastric lipase: Gastric lipase breaks down lipids, not involved in hemoglobin production.
C. Pepsinogen: Pepsinogen is converted to pepsin, which digests proteins-not related to RBC or hemoglobin synthesis.
D. HCl: Hydrochloric acid helps activate enzymes and digest food, but does not directly influence hemoglobin production.

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