Cardiac conduction is a process where electrical impulses activate cardiac tissue and the impulse transmits along a specific pathway to initiate cardiac contraction. Ectopic foci is a term used to describe impulses that originate from a source other than the usual pacemaker. Where can ectopic foci originate?

Select all the correct answers. for a claim about the natural world to be considered scientific, what attributes must it have? a).it must be applicable to future events and occurrences. b)it must be based on scientific observations that can be repeated in a controlled setting. c)it must be open to modification if new evidence doesn't completely support it. d)it must be consistent with only a small portion of relevant observations or data.