What electrical event must occur for atrial contraction to occur?

How is bias determined?

A) Calculate the difference from any outlier data points to the mean. B) Compare the average result from several dozen samples to known referent values. C) Plot the results of several dozen samples as a standard curve and compare them to the referent values provided by the manufacturer. D) Subtract the mean result from the reference method from the mean result of the new method.

What is the function of the respiratory system?

A) Transport oxygen throughout the body B) Provide nutrients to the cells C) Release oxygen from the body D) Provide the body with oxygen