What is described by the following: “the movement of gas across the alveolar wall is a function of the integrity of the alveolar-capillary membrane’?
A. perfusion limited
B. perfusion
C. diffusion limited
D. diffusion
Answer: C
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The mechanism in which the atria are depolarized with a backward flow of electricity is called ________ conduction
A) retrograde B) negative C) backward D) junctional
Which of the following would you expect to occur if perfusion to an area of the lung remained constant, but VA to this same area decreased?
a. The PACO2 should fall. b. The HCO3– will fall. c. The PAO2 should fall. d. The ventilation/perfusion ratio () should rise.
The small intestine is ________ feet long and about 1 inch in diameter.
A. 12 B. 21 C. 32 D. 43
The Stensen's duct is on the buccal mucosa, second bicuspid area. To help control the moisture flow of saliva and to protect the cheek, which of the following absorbent material is recommended?
a. Gauze 2 × 2 b. Dry aids c. Cotton rolls d. Saliva ejector