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Which of the following is a function of blood and blood cells?

Which of these characteristics does not represents cardiac muscle?

The iron-containing ring in hemoglobin is called ____________ and it binds ______________.

What is a good average pH value for blood?

what is a hematocrit?

The normal pacemaker of the heart is located in the

the “lub-dub” heart sounds are produced by

These vessels hold the largest percentage of the blood supply

The following are structural components of the conducting system of the heart.  Which of these would be LAST to see an electrical charge during your heart beat.  

What is the life span of an erythrocyte?