An ECG measures the:

A. amount of hydrocephalus.
B. electrical activity of the brain.
C. electrical activity of the muscles.
D. heart's rhythms electronically.

Answer: D

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Express the following as Arabic numerals

VIII = ___________ Fill in the blank(s) with correct word

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The ____ hormones are made of amino acids and do not cross cell membranes easily.

A. steroidal B. nonsteroidal C. prostaglandin D. melantonal

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