ATI RN
ATI Anatomy and Physiology Online Practice
1. The term 'physiology' is related to
- A. the Latin meaning of 'physical shape.'
- B. the structure of internal organs.
- C. the Greek for 'cutting up.'
- D. the Greek for 'relationship to nature.'
Correct answer: D
Rationale: The term 'physiology' originates from the Greek words 'physis' (meaning nature) and 'logos' (meaning study or relationship). Therefore, the correct answer is 'the Greek for 'relationship to nature.' Choice A is incorrect as it refers to the Latin meaning of 'physiology,' not the Greek origin. Choice B is incorrect as it is specific to the structure of internal organs, not the overall study of nature. Choice C is incorrect as it refers to a different term related to dissection or anatomy, not physiology.
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. Reproduction is the change in body characteristics over time.
- A. TRUE
- B. FALSE
- C. Not Sure
- D. None of the above
Correct answer: B
Rationale: Reproduction is the process by which living organisms produce offspring of the same kind. It is not related to changes in body characteristics over time. Therefore, the statement is false. Choices C and D are also incorrect as they do not align with the definition of reproduction.
4. Which of the following is not an example of a homeostatic mechanism in the human body?
- A. Shivering when the body temperature falls below normal.
- B. Increasing heart rate and force of contraction when blood pressure falls.
- C. Retaining fluid excessively.
- D. Secreting insulin after a meal to return blood sugar concentration toward normal.
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.
5. Is the following statement true: The anatomical position is lying down, as a cadaver would be positioned?
- A. TRUE
- B. FALSE
- C. Not Sure
- D. None of the above
Correct answer: B
Rationale: The correct answer is False. The anatomical position is a standardized way of describing the human body's orientation in a consistent manner. The anatomical position is standing upright, facing forward, with the arms at the sides and palms facing forward. This position serves as a reference point for anatomical descriptions and directional terms. Therefore, the statement that the anatomical position is lying down, as a cadaver would be positioned, is incorrect. Choice A is incorrect because the anatomical position is not lying down. Choices C and D are also incorrect as there is a definitive answer to the question.
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