The part of the conduction system that is located on the floor of the right atrium is the:
A. SA node.
B. AV node.
C. bundle of His.
D. Purkinje network.
Answer: B
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Why is it important to have a scrupulously clean hemocytometer when manually counting platelets?
a. So few platelets exist that they can be missed if dirt is present. b. They are so refractile, they can be confused with dirt. c. Their small size makes them easily confused with dirt. d. They are easily confused with the red cells that are present.
Generally, the paramedic is not at liberty to disregard a physician's order unless:
A) the physician is not the paramedic's medical director. B) the physician is not a licensed emergency physician. C) it is documented why the order was not carried out. D) carrying out the order will cause harm to the patient.
Which of the following antidiarrheal drugs is classified as Schedule V?
A) Pepto-Bismol B) Lomotil C) Imodium D) Maalox
Oral biofilms are surrounded or encircled by a(an)
A) intermicrobial matrix. B) microbial pellicle. C) dental adhesion. D) dental lectin.