ATI RN
Endocrine System Questions Questions
Question 1 of 5
Which circuit symbol represents a heater?
Correct Answer: D
Rationale: The correct answer is D. In circuit symbols, a heater is typically represented by a zigzag line enclosed in a rectangle. This symbol signifies the generation of heat through resistance. Option A does not resemble a heater symbol, Option B is a resistor symbol, and Option C is a light bulb symbol. Therefore, the correct answer is D as it accurately represents a heater in circuit diagrams.
Question 2 of 5
A congenital condition that includes mental retardation, short disproportional body size, and a thick tongue and neck is caused by __________.
Correct Answer: C
Rationale: Step 1: The congenital condition described points towards a disorder affecting growth and development. Step 2: The symptoms of mental retardation, short body size, and thick neck suggest hypothyroidism. Step 3: Thyroxin is a hormone produced by the thyroid gland that regulates metabolism and growth. Step 4: A deficiency of thyroxin in congenital hypothyroidism leads to the described symptoms. Step 5: Therefore, the correct answer is C: deficiency of thyroxin. Summary: A: Insulin deficiency does not match the symptoms described. B: Thymosin deficiency is not related to growth and mental retardation. D: Excess of synthetic growth hormone would not cause mental retardation and thick neck.
Question 3 of 5
The left supra-renal vein drains into:
Correct Answer: C
Rationale: The left supra-renal vein drains into the left renal vein. This is because the left adrenal gland is located above the left kidney, and the left renal vein is responsible for draining blood from the left kidney and adjacent structures, including the left adrenal gland. Therefore, the correct answer is C. Incorrect options: A: The inferior vena cava receives blood from various veins in the body but not specifically from the left supra-renal vein. B: The inferior mesenteric vein drains the large intestine and does not receive blood from the left supra-renal vein. D: The superior mesenteric vein drains blood from the small intestine and does not receive blood from the left supra-renal vein. In summary, the left supra-renal vein drains into the left renal vein due to their anatomical proximity, making option C the correct answer.
Question 4 of 5
Which connective tissue layer surrounds the biceps femoris muscle belly, separating it from the rest of the body?
Correct Answer: a
Rationale: The correct answer is A: Epimysium. Epimysium is the dense connective tissue layer that surrounds the entire muscle belly, providing structural support and protection. It separates the biceps femoris muscle from surrounding tissues. Perimysium (B) surrounds bundles of muscle fibers within the muscle belly, while endomysium (C) surrounds individual muscle fibers. Blood (D) is not a connective tissue layer but a fluid tissue responsible for transporting nutrients and waste products. Therefore, the epimysium is the correct choice as it specifically surrounds the biceps femoris muscle belly.
Question 5 of 5
Iodine-containing hormones:
Correct Answer: D
Rationale: The correct answer is D because iodine-containing hormones, such as thyroid hormones, regulate the metabolic rate by influencing the body's energy production and utilization. TSH (choice A) is not an iodine-containing hormone but a pituitary hormone that stimulates the thyroid gland to produce thyroid hormones. Hypothalamus releasing hormones (choice B) are not iodine-containing hormones. Steroids (choice C) are a different class of hormones that do not contain iodine. In summary, choice D is correct as iodine-containing hormones play a crucial role in regulating metabolic rate, while the other choices are incorrect as they do not accurately describe this function.