ATI RN
Questions About Reproductive System Questions
Question 1 of 4
Which combination of muscles permits inspiration?
Correct Answer: C
Rationale: External intercostals and diaphragm (C) expand the chest for inspiration. Internal intercostals (A, D) aid expiration, abdominals (B) assist forced expiration.
Question 2 of 4
An increase or decrease in blood P_CO₂ is always accompanied by a change in plasma H⁺ concentration (plasma pH).
Correct Answer: A
Rationale: True (A): P_CO₂ shifts H⁺ via carbonic acid (CO₂ + H₂O ⇌ H⁺ + HCO₃⁻), affecting pH. False (B) is incorrect.
Question 3 of 4
An elevation in pH causes peripheral chemoreceptors to increase the rate and depth of breathing.
Correct Answer: B
Rationale: False (B): High pH (alkalosis) decreases breathing rate via chemoreceptors. Low pH stimulates. True (A) is incorrect.
Question 4 of 4
An increased concentration of O₂ in the plasma contributes to the release of O₂ from hemoglobin to body tissues.
Correct Answer: B
Rationale: False (B): High plasma O₂ increases hemoglobin binding (left shift), not release. Low P_O₂ aids release. True (A) is incorrect.