ATI RN
ATI Anatomy and Physiology Online Practice
1. Is the elbow distal to the wrist?
- A. TRUE
- B. FALSE
- C. Not Sure
- D. None of the above
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.
2. The activities of an anatomist consist of ______, whereas those of a physiologist consist of _____.
- A. observing body parts; studying functions of body parts
- B. conducting experiments; making microscopic examinations
- C. studying molecules; observing forms of the body parts
- D. sketching; dissecting
Correct answer: A
Rationale: An anatomist focuses on observing the structure and morphology of body parts, such as organs, tissues, and cells, to understand their organization. On the other hand, a physiologist is more concerned with studying the functions and processes of these body parts, including how they work individually and together to maintain homeostasis. Therefore, the correct answer is 'observing body parts; studying functions of body parts.' Choices B, C, and D are incorrect as they do not accurately reflect the primary activities of anatomists and physiologists.
3. Homeostasis is the body's maintenance of a stable internal environment.
- A. TRUE
- B. FALSE
- C. Not Sure
- D. None of the above
Correct answer: A
Rationale: Homeostasis refers to the body's ability to maintain a stable internal environment despite external changes. It involves processes that regulate various physiological factors such as temperature, pH, and blood sugar levels within a narrow range. This ensures that the body's cells can function optimally. Therefore, the correct answer is True. Choices B, C, and D are incorrect because homeostasis aims to maintain stability, not instability, in the internal environment.
4. What is the maximum capacity of a normal adult bladder before involuntary micturition is likely to occur?
- A. 800-900ml
- B. 300-600ml
- C. 1000-2000ml
- D. 400-700ml
Correct answer: B
Rationale: The correct answer is B: 300-600ml. A normal adult bladder can hold approximately 300-600ml of urine before the urge to urinate becomes strong and involuntary micturition is likely to occur. Choice A (800-900ml), Choice C (1000-2000ml), and Choice D (400-700ml) all exceed the typical capacity of a normal adult bladder and would generally not be accurate in the context of involuntary micturition.
5. Which of the following characteristics of life and their descriptions are correct?
- A. Responsiveness - detecting and responding to changes in the environment
- B. Assimilation - incorporating absorbed substances into the body
- C. Respiration - obtaining energy from food molecules through oxygen
- D. Circulation - the movement of substances in body fluids
Correct answer: D
Rationale: The correct answer is D: Circulation - the movement of substances in body fluids. Circulation refers to the movement of substances like nutrients, gases, and wastes in body fluids to and from cells. Choice A is incorrect because responsiveness is about detecting and responding to changes in the environment, not obtaining and using oxygen. Choice B is incorrect because assimilation is the process of incorporating absorbed substances into the body, not changing them into chemically different forms. Choice C is incorrect because respiration is the process of obtaining energy from food molecules through oxygen, not the obtaining and using oxygen itself.
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