Name the phase of the cardiac cycle in which the ventricles relax.
The cardiac cycle is the sequence of events that occurs when the heart beats. In the (i)______, the heart ventricles (ii)______ and fill the heart with blood. In the (iii)_______ the ventricles (iv)________and pump the blood to the body through the arteries.
Name the following: (a) Any one vein which starts with an organ and ends in another organ besides the heart. (b) The kind of blood vessels which have no muscular walls. (c) An artery which carries impure (deoxygenated) blood. (d) The kind of blood cells which can squeeze out through the walls of one category of blood vessels. (e) The smallest common blood vessels formed by the union of capillaries. (f) The blood vessel which starts from capillaries and ends in capillaries. (g) The case of the cardiac cycle in which the auricles contract. (h) The valve present in between the chambers on the right side of the human heart. (i) The phase of the cardiac cycle in which the ventricle get filled with blood from the atrium. (j) The fluid found between the membrane of the heart.