ATI RN
ATI Anatomy and Physiology Online Practice Questions
Question 1 of 5
The ability of an organism to sense and react to changes in its body illustrates
Correct Answer: C.
Rationale: The correct answer is 'responsiveness.' Responsiveness refers to the ability of an organism to detect and respond to stimuli in its environment. In this context, it specifically relates to an organism's ability to sense and react to changes within its body.
Choices A, B, and D are incorrect. Circulation refers to the movement of fluids within an organism, respiration is the process of exchanging gases, and absorption is the uptake of substances by cells or tissues.
Question 2 of 5
Is the elbow distal to the wrist?
Correct Answer: B
Rationale: The correct answer is False. In anatomical terms, 'distal' means farther away from the center of the body or the point of attachment. The elbow is proximal to the wrist because it is closer to the center of the body.
Therefore, the statement that the elbow is distal to the wrist is incorrect.
Choice A is incorrect because the elbow is not distal to the wrist.
Choice C is incorrect as the anatomical relationship between the elbow and wrist can be determined.
Choice D is incorrect as there is a definitive answer to this anatomical question.
Question 3 of 5
Which of the following is not an example of a homeostatic mechanism in the human body?
Correct Answer: C
Rationale: The correct answer is C. Homeostatic mechanisms aim to maintain internal stability within the body.
Choices A, B, and D all represent examples of homeostatic mechanisms. Shivering helps generate heat to raise body temperature back to normal levels. Increasing heart rate and force of contraction work to restore blood pressure. Insulin secretion after a meal helps regulate blood sugar levels. On the other hand, retaining fluid excessively can lead to fluid imbalance rather than maintaining internal stability, making it the incorrect choice.
Question 4 of 5
Do chromosomes get longer as a cell ages?
Correct Answer: B
Rationale: Chromosomes do not get longer as a cell ages. In fact, chromosomes condense and become more compact during cell division to ensure proper segregation.
Choice A is incorrect because chromosomes do not elongate with age.
Choice C is not the correct answer as there is scientific evidence to support that chromosomes do not lengthen over time.
Choice D is not the right option as the correct answer is 'False' in this case.
Question 5 of 5
A parietal layer of a serous membrane lines cavities, whereas a visceral layer of a serous membrane covers organs.
Correct Answer: B
Rationale: In serous membranes, the parietal layer lines the cavities, providing support and protection, while the visceral layer covers the organs, reducing friction and allowing them to move freely.
Therefore, the correct answer is 'lines cavities; covers organs.'
Choices C and D are incorrect because serous membranes do not secrete mucus; instead, they secrete a watery serous fluid.
Choice A is incorrect as it reverses the functions of the parietal and visceral layers in relation to organs and cavities.