Mucosa surface cell secretes mucous which provides a physical barrier between __ and __.

Correct Answer: C

Rationale: The correct answer is C: Mucosa and Lumen. The mucosa surface cell secretes mucus that forms a physical barrier between the mucosa (inner lining of a cavity or organ) and the lumen (inner space of a tubular structure). This barrier protects the underlying tissues from harmful substances in the lumen. Choice A (Mucosa and Epithelium) is incorrect because the mucosa is part of the epithelium layer, so it would not make sense for the physical barrier to be between them. Choice B (Lymph Vessel and Lamina Propria) is incorrect because these structures are not directly related to the secretion of mucus for protection. Choice D (Lumen and Epithelium) is incorrect because the physical barrier created by the mucus is specifically between the mucosa cells and the lumen, not the epithelium itself.

Correct Answer: B

Rationale: The correct answer is B: Liver. The liver produces bile, which is a greenish-yellow fluid that helps in the digestion and absorption of fats. It is stored in the gallbladder and released into the small intestine when needed. The stomach (A) produces gastric juices, not bile. The pancreas (C) produces digestive enzymes, but not bile. The small intestine (D) is where bile is released to aid in the digestion of fats, not where it is produced or stored.

Correct Answer: B

Rationale: The correct answer is B: liver. The liver is not part of the gastrointestinal tract. The GI tract consists of the esophagus, stomach, and small intestine, where digestion and absorption of nutrients occur. The liver is an accessory organ that aids in digestion by producing bile but is not part of the tract itself. The liver is involved in detoxification, storage of nutrients, and production of important proteins, but it does not play a direct role in the digestion process. Therefore, the liver is the correct answer.

Correct Answer: B

Rationale: The correct answer is B because a waist circumference of 42 inches in men signifies abdominal obesity, which is a significant risk factor for health issues related to obesity. A high waist circumference indicates excess visceral fat, which is linked to heart disease and other health problems. Choice A is incorrect because a BMI of 18 kg/m2 indicates underweight, not obesity. Choice C is incorrect because a BMI of 24 kg/m2 falls within the healthy weight range, not indicating obesity. Choice D is incorrect because a waist circumference of 34 inches in women is considered normal, not indicative of obesity.

Correct Answer: D

Rationale: The correct answer is D: Place the patient in a private room on contact isolation. This is important because Clostridium difficile is highly contagious, spread through contact with infected feces. Isolating the patient helps prevent the spread. A: Teaching about food storage is irrelevant to managing C. difficile. B: Administering medications is not mentioned in the question. C: Ordering a diet without dairy is not the priority; isolation is key to prevent transmission.