Pericardial fluid
A) circulates through the heart's chambers.
B) lubricates the electrical system of the heart.
C) prevents backflow of blood from one chamber to the other.
D) decreases friction of the pericardial layers as they rub against each other.
D
You might also like to view...
The contaminated area in a hazardous incident is known as the:
a. contaminated zone. b. decontamination zone. c. hot zone. d. cold zone.
The 18-gauge needles used to collect donor blood for transfusion have a larger bore than do standard blood collection needles. What is the advantage of this needle?
a. The needle minimizes discomfort to the donor. b. The needle allows for tube holder and vacutainer use. c. The phlebotomist has better technique with a larger needle. d. The collection process is faster, and less hemolysis occurs.
A ____ is a combination of an engine and ladder company and can perform either function as necessary on a fire scene.
A. quint B. truck C. rescue company D. platform
Alkalization of urine by giving bicarbonate is used to treat patients presenting with phenobarbital (weak acid) overdose. Which of the following best describes the rationale for alkalization of urine in this setting?
A. To reduce tubular reabsorption of phenobarbital. B. To decrease ionization of phenobarbital. C. To increase glomerular filtration of phenobarbital. D. To decrease proximal tubular secretion. E. To increase tubular reabsorption of phenobarbital.