Which of the following mismatches pancreatic enzyme with its function?

Correct Answer: D

Rationale: The correct answer is D because pro-carboxypeptidase is an inactive form of carboxypeptidase, which is involved in breaking down proteins. It is not a mismatch. A is correct as proteolytic enzymes indeed break down proteins. B is correct as amylase breaks down carbohydrates. C is correct as nuclease enzymes break down nucleic acids. Therefore, the mismatch is only seen in option D.

Correct Answer: C

Rationale: Rationale for Correct Answer C: Obstructive jaundice is caused by blockage in the bile ducts, leading to decreased excretion of bilirubin into the intestine. This results in dark stool due to excess stercobilin, a byproduct of bilirubin breakdown. Other choices are incorrect because: A: Fragile red blood cells cause hemolytic jaundice, not obstructive jaundice. B: Elevated blood hemobilirubin is seen in hemolytic jaundice, not obstructive jaundice. D: Dark brown urine is associated with conditions like hemoglobinuria, not obstructive jaundice.

Correct Answer: D

Rationale: The correct answer is D: Muscularis Mucosa. This layer is responsible for primary digestive motility due to its smooth muscle fibers that contract to move food along the digestive tract. The other choices do not directly contribute to motility. A: Mucosa is the innermost layer involved in absorption. B: Submucosa provides support and contains blood vessels. C: Mesentery is a connective tissue that supports and attaches organs, but does not directly regulate motility.

Correct Answer: D

Rationale: The correct answer is D: Hydrochloric acid. Saliva is composed mainly of water, amylase (an enzyme that breaks down starch), and mucus. Hydrochloric acid is not a component of saliva; instead, it is a component of gastric juice produced in the stomach. It plays a role in the digestion of food in the stomach by lowering the pH level. Therefore, choice D is the correct answer as it does not belong to the components of saliva. Choices A, B, and C are incorrect as they are all components found in saliva.

Correct Answer: C

Rationale: The correct answer is C: rugae. When the stomach is empty, it folds up into wrinkles called rugae. These folds allow the stomach to expand when food is consumed and contract when it is empty. Shincters (A) are muscular valves that control the flow of food in and out of the stomach, not the folds of the stomach itself. Bolus (B) refers to a small rounded mass of a substance, typically food that has been chewed and is ready to be swallowed, not the wrinkles of the stomach. Chyme (D) is the semi-fluid mass of partly digested food that is expelled by the stomach into the small intestine, not the folds of the stomach.