The human heart is about the size of a _________

a. ping-pong ball
b. quarter
c. closed fist
d. football


c
RATIONALE: The human heart is about the size of a closed fist and is triangular in shape. It acts as a pump to circulate blood throughout the body.

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The ____ is the usual site of fertilization where the ovum and spermatozoa combine to form an embryo.

A. labia minora B. fallopian tube C. vulva D. introitus

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Which of the following agents is helpful in reducing bacterial levels?

a. lidocaine viscous b. chlorhexidine c. neutral fluoride d. acidulated phosphate fluoride

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The abbreviation for milligram is ____. 

A. m B. mL C. mm D. mg E. mcg

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The sensitivity of a given type of dental x-ray film is known as its what?

What will be an ideal response?

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