Which term describes the primary mechanism for deposition of small particles?
a. Hygroscopic condensation
b. Gravity sedimentation
c. Brownian diffusion
d. Inertial impaction
ANS: C
Brownian diffusion is the primary mechanism for deposition of small particles (<3 µm), mainly in the respiratory region where bulk gas flow ceases and most aerosol particles reach the alveoli by diffusion.
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Isotonic solutions fall in the range of ________ milliosmoles per liter
A) 210—280 B) 250—300 C) 240—300 D) 280—310
A brown or black pigment in urine can be associated with:
A) bilirubin. B) melanin. C) phenytoin. D) hemoglobin.
Match each type of protein with its appropriate function.
A. insulin for glucose absorption B. lipoprotein for carrying lipids in the blood C. myosin in muscles D. gamma globulin for defense against disease E. lipase for the hydrolysis of lipids
A 55-year-old man complains of severe pain between his shoulder blades, which he describes as "ripping" in nature. He tells you that the pain began suddenly and has been intense and unrelenting since its onset. His medical history includes hypertension, and he admits to being noncompliant with his antihypertensive medication. Which of the following assessment findings would MOST likely reinforce your suspicion regarding the cause of his pain?
A) Disappearance of radial pulses during inspiration B) Difference in blood pressure between the two arms C) ST-segment depression on the 12-lead ECG tracing D) Bruits to both carotid arteries during auscultation