Which of the following is connected to the nasopharynx by the auditory (Eustachian) tube?
A. Outer ear
B. Inner ear
C. Middle ear
D. Cochlea
Answer: C
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Which of the following is a factor that does NOT affect hemoglobin's affinity for oxygen?
a) pH of blood b) Partial pressure of the oxygen c) Amount of oxygen available d) Temperature e) Respiratory rate
Secondary lymphoid structures may contain
A) lymph. B) sinusoids. C) macrophages. D) lymphocytes. E) All of the answers are correct.
A transplant recipient may be able to eventually discontinue immunosuppressant drugs if
A) the donor and recipient are both under age 30. B) The recipient receives a well-matched transplant from the donor. C) the transplanted organ is not vital. D) the recipient receives bone marrow stem cells from the donor.
A Caucasian patient with pale skin is treated for low blood pressure with medication that elevates the blood pressure; however, the skin's pallor does not change. Which of the following is the most likely cause of the pallor in this patient?
A. Respiratory disease that results in the blood being poorly oxygenated B. The presence of hematomas in the skin C. Hypertension caused by excessive use of the medication D. Anemia