Answer:
Right atrium -----> Atria contracts and passes through the tricuspid valve -------> Now in right ventricle ------> Ventricles eventually contract and now blood goes past pulmonary valve into the pulmonary trunk into pulmonic circulation where gas exchange occurs in the alveoli and CO2 is exhaled & released from the carboxyhemoglobin portion of hemoglobin and O2 inspired and binds to one of the alpha/beta chains of hemoglobin ---------> Blood now returns via pulmonary veins and ends up in the left atrium ----------> atria contract and blood passes the mitral valve ----------> blood now in the left ventricle -----------> left ventricle eventually contracts and blood passes through the aortic semilunar valve into the aorta to go out into systemic circulation.
Step-by-step explanation:
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