ATI RN
Multiple Choice Questions on Endocrine System Questions
Question 1 of 5
Regarding thyroid hormones:
Correct Answer: B
Rationale: Step 1: Albumin binds more thyroid hormones than TBG due to its higher concentration in the blood. Step 2: TBG has higher affinity for thyroid hormones than albumin, leading to less free hormone. Step 3: Hence, choice B is correct as albumin has more capacity to bind thyroid hormones. Summary: Choice A is incorrect as significant T3 is produced peripherally. Choice C is incorrect as TBG has higher affinity. Choice D is incorrect as thyroid hormones stimulate lipolysis, not lipogenesis.
Question 2 of 5
The hormone involved in rhythmic activities, such as day/night and seasonal changes, is .
Correct Answer: B
Rationale: The correct answer is B: melatonin. Melatonin is the hormone involved in regulating rhythmic activities like day/night and seasonal changes through its influence on the body's circadian rhythm. Calcitonin is a hormone that regulates calcium levels in the blood; estrogen is a female sex hormone; and cyclin is a protein involved in cell cycle regulation. Melatonin's role in regulating sleep-wake cycles and responding to changes in light exposure makes it the most appropriate choice for a hormone involved in rhythmic activities.
Question 3 of 5
Saliva contains the enzyme salivary amylase. Which food type does salivary amylase begin to break down?
Correct Answer: B
Rationale: Salivary amylase breaks down starches into simple sugars like maltose. Starch is a complex carbohydrate found in foods like bread, pasta, and rice. When you chew food, salivary amylase in saliva starts the digestion process by breaking down starch molecules. Proteins are broken down by stomach enzymes, roughage (fiber) is not digested by enzymes in the mouth, and fats are primarily digested in the small intestine by pancreatic lipase. Therefore, choice B, starches, is the correct answer as salivary amylase specifically targets this food type for initial breakdown.
Question 4 of 5
Which of the following statements correctly describe the peritoneum?
Correct Answer: A
Rationale: The correct answer is A because the peritoneum is indeed the largest serous membrane in the body. It lines the abdominal cavity and covers the organs within it, providing lubrication and reducing friction. Choice B is incorrect because the peritoneum is a serous membrane, not a synovial membrane (Choice C) or a mucous membrane (Choice D). The peritoneum does not secrete synovial fluid like synovial membranes or produce mucus like mucous membranes. Hence, Choice A is the only statement that accurately describes the peritoneum.
Question 5 of 5
The female patient is admitted with a new diagnosis of Cushing syndrome with elevated serum and urine cortisol levels. Which assessment findings should the nurse expect to see in this patient?
Correct Answer: D
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.