GENERAL KNOWLEDGE

Detailed explanation-1: -arteries-these carry blood pumped away from the heart; they are the largest and strongest blood vessels. veins-these return blood to the heart. capillaries-these are tiny vessels that connect arteries and veins.

Detailed explanation-2: -The blood circulatory system (cardiovascular system) delivers nutrients and oxygen to all cells in the body. It consists of the heart and the blood vessels running through the entire body. The arteries carry blood away from the heart; the veins carry it back to the heart.

Detailed explanation-3: -Blood is pumped through the valves into the ventricles. Where the atria meet the ventricles, there is an area of special cells-called the atrio-ventricular node-which pass the electrical signals throughout your heart muscle by a system of electrical pathways, known as the conducting system.