Large blood vessels and lymphocytes are found in the

Correct Answer: D

Rationale: The submucosa houses large vessels and immune cells.

Correct Answer: A

Rationale: The duodenum connects to the pylorus.

Correct Answer: B

Rationale: Bile salts emulsify fats for digestion.

Correct Answer: D

Rationale: Carbohydrate digestion starts in the oral cavity with salivary amylase breaking down starches into simpler sugars.

Correct Answer: A

Rationale: Assimilation involves using absorbed nutrients to synthesize new molecules, requiring enzymes, whereas absorption is the uptake of nutrients into the blood, not requiring synthesis, making A correct.