The hepatic sinusoids receive oxygenated and unoxygenated blood. The blood vessels that provide mixed blood to the sinusoids are the

Correct Answer: D

Rationale: Rationale: 1. The hepatic artery carries oxygenated blood to the liver. 2. The hepatic portal vein carries nutrient-rich but deoxygenated blood from the digestive system. 3. The hepatic sinusoids receive blood from both the hepatic artery and portal vein, creating a mix of oxygenated and nutrient-rich blood. 4. Choice D (hepatic artery and hepatic portal vein) is correct as it accurately reflects the blood vessels providing mixed blood to the hepatic sinusoids. Summary: - Choice A (hepatic artery and hepatic vein) is incorrect as the hepatic vein carries deoxygenated blood. - Choice B (hepatic vein and hepatic portal vein) is incorrect as it does not include the artery supplying oxygenated blood. - Choice C (hepatic portal artery and hepatic portal vein) is incorrect as there is no such thing as a hepatic portal artery.

Correct Answer: C

Rationale: The correct answer is C: gastroesophageal reflux disorder (GERD). As people age, they are more likely to experience GERD due to changes in the muscles of the esophagus and stomach, leading to acid reflux. Antacids, H2 antagonists, and proton pump inhibitors are commonly used to alleviate symptoms of GERD by reducing stomach acid production. Crohn's disease (A), irritable bowel syndrome (B), and colitis (D) are not typically associated with aging and are not directly related to the need for these medications in elderly people.

Correct Answer: D

Rationale: The correct answer is D: GLUT5. GLUT5 is the specific transporter responsible for transporting fructose across the apical membrane of enterocytes in the small intestine. It is a uniporter that facilitates the movement of fructose down its concentration gradient via facilitated diffusion. SGLT1 (Choice A) and SGLT2 (Choice B) are sodium-glucose transporters involved in the absorption of glucose and galactose, not fructose. GLUT4 (Choice C) is primarily found in muscle and adipose tissue and is responsible for insulin-mediated glucose uptake, not fructose transport in the small intestine.

Correct Answer: D

Rationale: The correct answer is D: Drink D with 8% carbohydrate and contains sodium. During aerobic exercise, glucose and sodium are crucial for optimal hydration and energy replenishment. The 8% carbohydrate concentration is within the recommended range for efficient glucose absorption, while the presence of sodium helps in fluid retention and electrolyte balance. Choices A and B lack sodium, which is necessary for hydration. Choice C has the right carbohydrate concentration but lacks sodium, making it less effective compared to Drink D.

Correct Answer: D

Rationale: The correct answer is D. A board-like abdomen with shoulder pain indicates a perforated ulcer, a medical emergency requiring immediate intervention. A perforation can lead to peritonitis and septic shock. Choice A, projectile vomiting, may indicate a gastric outlet obstruction but is not as immediately life-threatening as a perforation. Choice B, burning sensation 2 hours after eating, is a common symptom of peptic ulcer disease and does not indicate a complication. Choice C, coffee-ground emesis, may indicate bleeding but is not as severe as a perforation.