ATI RN
ATI Anatomy and Physiology Online Practice
1. 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.
2. Which of the following is a result of stimulation of the sympathetic nervous system?
- A. decreased blood flow to the skeletal muscles
- B. increased cardiac output
- C. decreased respiratory rate
- D. increased urinary output
Correct answer: B
Rationale: Stimulation of the sympathetic nervous system leads to an increase in cardiac output. When the sympathetic nervous system is activated, it causes the heart to beat faster and with more force, leading to an increased cardiac output. Choices A, C, and D are incorrect because the sympathetic nervous system does not cause decreased blood flow to the skeletal muscles, decreased respiratory rate, or increased urinary output.
3. Which of the following is produced by the prostate gland?
- A. testosterone
- B. fluid to lubricate the head of the penis
- C. substance to enhance sperm mobility
- D. Gonadotrophin-releasing hormone
Correct answer: B
Rationale: The correct answer is 'fluid to lubricate the head of the penis.' The prostate gland produces a milky fluid that makes up part of the seminal fluid, which helps to nourish and transport sperm. Testosterone is produced mainly by the testes, not the prostate gland. While the prostate gland does contribute to sperm mobility, its primary function is to produce the fluid that lubricates the penis during ejaculation. Gonadotrophin-releasing hormone is produced by the hypothalamus and regulates the release of hormones from the pituitary gland.
4. Why are anatomy and physiology difficult to separate?
- A. Physiological functions depend on anatomical structures.
- B. Physiological functions in an organism are ongoing.
- C. Body parts provide structural support.
- D. Our understanding of physiology is changing more than our understanding of anatomy.
Correct answer: A
Rationale: Anatomy and physiology are difficult to separate because physiological functions depend on anatomical structures. The correct answer highlights the interdependence between the two disciplines; physiological functions are carried out by anatomical structures. Choice B is incorrect as it only states a characteristic of physiological functions without addressing the relationship with anatomy. Choice C is incorrect as it talks about body parts providing structural support, which is not directly related to the interdependence of anatomy and physiology. Choice D is incorrect because the rate of change in understanding does not necessarily dictate the difficulty of separating the two disciplines.
5. 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.
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