The prefix tachy- means:

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Multiple Choice

The prefix tachy- means:

Tachy- signals speed, meaning something is occurring faster than normal. In medical terms, this prefix indicates above-normal, rapid activity, such as tachycardia (rapid heart rate) or tachypnea (rapid breathing). The other ideas don’t fit because they describe slower or normal pace (brady- means slow; normal pace isn’t conveyed by tachy-), or an equal state (iso- indicates sameness, not speed).

Tachy- signals speed, meaning something is occurring faster than normal. In medical terms, this prefix indicates above-normal, rapid activity, such as tachycardia (rapid heart rate) or tachypnea (rapid breathing). The other ideas don’t fit because they describe slower or normal pace (brady- means slow; normal pace isn’t conveyed by tachy-), or an equal state (iso- indicates sameness, not speed).

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