A)Explain the concept of systole and diastole.
B) hepatic portal system.

Dear Student, (a)- The systole is the rhythmic contraction of the chambers of the heart and diastole is the rhythmic relaxation of the chambers of the heart. The events occuring during one heart beat is known as cardiac cycle. During this cycle, the auricles and the ventricles of the heart rhythmically contract and relax. (b)- The hepatic portal system basically consists of the hepatic portal artery, responsible for taking the products of digestion from the small intestine to the liver, where they are broken down further, cleaned of any microbes, and sent to all the body cells via the hepatic portal vein. Regards