ATI RN
Endocrine System Questions Questions
Question 1 of 5
What is meant by antibiotic resistance?
Correct Answer: B
Rationale: The correct answer is B: Only some bacteria will be killed by some antibiotics. Antibiotic resistance refers to the ability of bacteria to survive and grow despite the presence of an antibiotic. This occurs when bacteria evolve and develop mechanisms to defend against antibiotics. It is not accurate to say that no bacteria will be killed by any antibiotic (choice A) as some bacteria may still be susceptible to certain antibiotics. Antibiotics are not effective against viruses, so choice C and D are incorrect. In summary, antibiotic resistance specifically pertains to bacteria developing the ability to survive some antibiotics, making choice B the correct answer.
Question 2 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 3 of 5
Which of the following signals would affect local cells by releasing chemicals into the extracellular fluid?
Correct Answer: B
Rationale: The correct answer is B: paracrine. Paracrine signaling involves the release of signaling molecules into the extracellular fluid to affect nearby target cells. This type of signaling is localized and affects cells within close proximity. Autocrine signaling (A) involves cells releasing signals that act on themselves, endocrine signaling (C) involves signaling molecules being released into the bloodstream to affect distant target cells, and neural signaling (D) involves the transmission of signals through neurons. In this case, paracrine signaling specifically targets local cells by releasing chemicals into the extracellular fluid, making it the correct choice.
Question 4 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 5 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.