Regarding pancreatic secretion:

Correct Answer: D

Rationale: Correct Answer: D Rationale: 1. Chemotrypsinogen is the inactive precursor of chymotrypsin. 2. Trypsin activates chemotrypsinogen to form active chymotrypsin. 3. This activation occurs in the small intestine, enabling protein digestion. Summary: A: Trypsin is secreted as an inactive zymogen, not in the active form. B: CCK stimulates enzyme secretion, not bicarbonate. C: Secretin mainly stimulates bicarbonate secretion, not enzymes.

Correct Answer: D

Rationale: The correct answer is D: Lungs. The lungs are not a part of the digestive system. The digestive system is responsible for breaking down food into nutrients, absorbing those nutrients, and eliminating waste. The lungs are part of the respiratory system, responsible for gas exchange. Liver (A) and gallbladder (B) are both part of the digestive system, aiding in digestion and nutrient absorption. Absorption (C) is a process within the digestive system, not a separate entity. In summary, the lungs do not play a role in the digestion process, making them the correct answer choice.

Correct Answer: B

Rationale: The correct answer is B because asking about situations that tend to increase appetite helps identify triggers for overeating, aiding in behavior modification. This approach targets the root cause of overeating. A is incorrect as focusing solely on caloric intake may not address emotional or situational triggers for overeating. C is incorrect as suggesting rewards like sugarless candy may not address the underlying behaviors contributing to obesity. D is incorrect as eating small amounts frequently may not address the behavioral and psychological aspects of overeating.

Correct Answer: B

Rationale: The correct answer is B: Bulk-forming laxatives are an excellent source of fiber. Fiber helps to soften stools, regulate bowel movements, and prevent constipation. By increasing fiber intake through bulk-forming laxatives or dietary sources, the patient can promote regularity and prevent chronic constipation. Explanation for incorrect choices: A: Stimulant and saline laxatives can cause dependency and are not recommended for regular use as they can disrupt the natural bowel function. C: While physical activity like walking or cycling can aid in bowel motility, it is not the primary factor in preventing chronic constipation. D: Timing of bowel movements can vary among individuals, and there is no specific "good time" universally applicable for everyone to have a bowel movement.

Correct Answer: C

Rationale: The correct answer is C: root. The root of a tooth is the portion that lies within the mandible socket, anchoring the tooth in place. The root helps support the tooth and allows for the transfer of nutrients. Dentin (A) is the hard tissue beneath the enamel, crown (B) is the visible part of the tooth above the gumline, and cementum (D) covers the root surface but is not the portion within the mandible socket.