Question

the one phase (atrioventricular) of the cardiac cycle takes to complete?? do blood cells contain organelles and nucleus or hemoglobin??

Answer 1

Hey, here if you are referring to an RBC it has does not have nucleus but has haemoglobin in it which is a complex compound and an RBC has all other organelles rather than a nucleus.

The space for nucleus is used for the purpose of carrying more oxygen to the cells of the body..