ATI RN
Human Reproductive System Questions Questions
Question 1 of 5
In the blood, most of the CO₂ is transported as:
Correct Answer: B
Rationale: Most CO₂ (70%) is transported as bicarbonate (HCO₃⁻, B). Carboxyhemoglobin (A) is CO, carbaminohemoglobin (C) is 20%, dissolved (D) is 10%.
Question 2 of 5
Factors determining the extent to which O₂ will combine with hemoglobin are:
Correct Answer: D
Rationale: O₂ binding to hemoglobin depends on P_O₂ (A), temperature (B), and H⁺ (C) via the Bohr effect, so all (D) apply.
Question 3 of 5
Active transport mechanisms effect exchange of gases in the lungs and tissues.
Correct Answer: B
Rationale: False (B): Gas exchange is by diffusion, not active transport. True (A) is incorrect.
Question 4 of 5
The auditory canals open into the nasopharynx.
Correct Answer: B
Rationale: False (B): Auditory (Eustachian) tubes open to the nasopharynx, not canals (ear anatomy). True (A) is incorrect.
Question 5 of 5
The fraction of the tidal volume that is ventilated in one minute is known as the minute respiratory volume.
Correct Answer: B
Rationale: False (B): Minute respiratory volume is tidal volume × breaths per minute, not a fraction. True (A) is incorrect.