Gastric secretion composed of all of the following Except:

Correct Answer: D

Rationale: The correct answer is D: Amylase. Gastric secretion does not contain amylase. Amylase is an enzyme produced by the pancreas and salivary glands to break down carbohydrates. In the stomach, gastric secretions mainly consist of hydrochloric acid (HCl) for digestion, intrinsic factor (IF) for vitamin B12 absorption, and mucous to protect the stomach lining. Therefore, amylase is not a component of gastric secretion.

Correct Answer: B

Rationale: The correct answer is B: Break down proteins. Hydrochloric acid in the stomach helps to activate pepsin, an enzyme that breaks down proteins into smaller peptides. This process is essential for proper digestion of proteins. Choice A is incorrect because carbohydrates are broken down by amylase enzymes in the mouth and small intestine. Choice C is incorrect because emulsification of fats occurs in the small intestine with the help of bile. Choice D is incorrect as hydrochloric acid plays a significant role in the digestion of proteins in the stomach.

Correct Answer: A

Rationale: The correct answer is A: a creamy paste called chyme. After food enters the stomach, it gets mixed with gastric juices and enzymes, forming a semi-liquid substance known as chyme. This chyme is then slowly released into the small intestine for further digestion and absorption of nutrients. Option B is incorrect as food is not rolled into a bolus in the stomach but rather churned into chyme. Option C is incorrect as pepsin, an enzyme for protein digestion, is already present in the stomach and starts working on digesting proteins before the food leaves the stomach. Option D is incorrect as chyme is the accurate description of the partially digested food leaving the stomach.

Correct Answer: A

Rationale: The correct answer is A: Administer IV fluids. Initial care for acute diverticulitis involves IV fluids to maintain hydration and electrolyte balance, as patients often have nausea, vomiting, and decreased oral intake. IV fluids help prevent dehydration and support the body during the acute phase of the condition. Options B, C, and D are incorrect. Colonoscopy is contraindicated during acute diverticulitis due to the risk of perforation. High-fiber diet and stool softeners/enemas are not recommended initially as they can worsen symptoms and increase the risk of complications.

Correct Answer: A

Rationale: Correct Answer: A Rationale: 1. Stool specimen collection helps identify the cause of diarrhea (e.g., infection). 2. It assists in determining appropriate treatment. 3. It helps rule out serious conditions. 4. Colonoscopy (B) and barium enema (C) are invasive procedures not typically indicated for acute diarrhea. 5. Blood cultures (D) are not the first-line investigation for diarrhea without systemic signs of infection.