Enzyme secreted by the small intestine after it detects a bolus of fatty food. This will contract the gallbladder to secrete bile and relax the sphincter of Oddi to aid in the emulsification of fats and its digestion.

Correct Answer: C

Rationale: Cholecystokinin (CCK) triggers gallbladder contraction and bile release for fat emulsification and digestion.

Correct Answer: D

Rationale: Checking tube placement is critical before feeding to ensure it's in the stomach, preventing aspiration.

Correct Answer: B

Rationale: HFNC provides high flow rates that can wash out dead space and allow precise FiO₂ control, making it a key consideration in its use, unlike the other options which are incorrect or less relevant.

Correct Answer: C

Rationale: The King LT uses dual cuffs (proximal and distal) to ventilate, with the tip typically in the esophagus, not the trachea.

Correct Answer: A

Rationale: Right-sided heart failure causes blood to back up into the systemic circulation, leading to peripheral edema.