Which of the following statements BEST describes the exchange of gas in the alveoli?
A) Air moves into the alveoli, blood is transported by the pulmonary capillaries, and diffusion occurs.
B) Blood moves by way of the pulmonary capillaries, air arrives at the alveoli, and osmosis occurs.
C) Air moves into the airway, blood arrives via the pulmonary veins, and osmosis occurs.
D) Blood moves from the left heart to the lungs, air arrives in the alveoli sacks, and diffusion occurs.
A
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Indicate whether the statement is true or false
A CBC is collected by fingerstick from a patient. The results of the CBC show a lower WBC and platelet count than blood collected the previous day. What caused this change?
a. The collection site was not warmed before collection. b. Betadine was used to clean the site. c. The blood was collected too slowly and partially clotted in the collection container. d. None of the above
The expectations for medical assistants have increased because ________.
A. they are not paid as much as other healthcare workers B. not enough students are taking medical assisting courses C. of the change in the billing systems for insurance companies D. the numbers of other healthcare workers are not adequate to fill the need E. of changes in healthcare and availability of more formal training
Research indicates that skilled performers direct their visual attention more quickly to ________ conditions in the environment than novices.
Fill in the blank(s) with the appropriate word(s).