The liver contains special blood channels termed _____.

Correct Answer: A

Rationale: The correct answer is A: sinusoids. Sinusoids are specialized blood channels found in the liver that allow for the exchange of nutrients, waste products, and toxins between hepatocytes and blood. They play a crucial role in the liver's functions of detoxification, metabolism, and storage. Central vein (B) is a vessel located in the center of liver lobules, not a blood channel. Hepatic cells (C) refer to the liver cells themselves, not blood channels. Portal veins (D) are vessels that bring blood from the digestive organs to the liver, but they are not the special blood channels within the liver.

Correct Answer: B

Rationale: The correct answer is B (stomach) because amylase is an enzyme that breaks down carbohydrates, and it is primarily found in the mouth and the small intestine (duodenum and pancreas). In the mouth, salivary amylase begins the digestion of starches. In the small intestine, pancreatic amylase continues this process. The stomach, however, is not a site for amylase secretion but rather secretes pepsin for protein digestion. Therefore, amylase is not found in the stomach. Choices A, C, and D are incorrect because amylase is indeed present in the mouth, duodenum, and pancreas, respectively.

Correct Answer: B

Rationale: The correct answer is B because pancreatic juice contains enzymes such as Trypsinogen, Lipase, Amylase, and Procarboxypeptidase. Trypsinogen helps in protein digestion, Lipase breaks down fats, Amylase digests carbohydrates, and Procarboxypeptidase aids in protein digestion. Choice A is incorrect because it includes Rennin, which is not typically found in pancreatic juice. Choice C is incorrect because Pepsin is a stomach enzyme, not found in pancreatic juice. Choice D is incorrect because Maltase is an enzyme found in the small intestine, not in pancreatic juice.

Correct Answer: C

Rationale: The correct answer is C: facilitated transport. Fructose is absorbed through facilitated diffusion using specific carrier proteins in the intestinal mucosa. This process does not require energy input and allows fructose to move down its concentration gradient. Unlike active transport (requiring energy) and co-transport mechanisms (involving multiple substances), fructose absorption occurs through facilitated transport by specific carrier proteins. Simple diffusion is not the main mechanism for fructose absorption due to its hydrophilic nature. Thus, facilitated transport best describes how fructose is absorbed by the intestinal mucosa.

Correct Answer: B

Rationale: The correct answer is B: Semi-Fowler's position. After a traditional cholecystectomy, placing the client in a Semi-Fowler's position (head of the bed elevated at 30-45 degrees) helps promote lung expansion, improve breathing, and reduce the risk of aspiration. This position also helps with comfort and aids in preventing complications such as respiratory issues and surgical site complications. A: Prone position is incorrect as it involves lying on the stomach and is not appropriate for a client after cholecystectomy due to the risk of putting pressure on the abdomen and surgical site. C: Supported Sims' position is incorrect as it is typically used for rectal examinations or enemas, not for post-cholecystectomy care. D: Dorsal recumbent position is incorrect as it involves lying on the back with knees flexed, which may not provide optimal support and comfort for a client post-cholecystectomy.