Question

With which cell organelle diastole and systole are associated?

Answer 1

Contractile vacuoles is a cell organelle, associated with diastole and systole.

In freshwater environment the concentration of fluid outside cell is more than inside. Under these conditions water flows inside by osmosis.Contractile vacuoles act as protective mechanism that prevents cell from absorbing excessive water and possibly rupturing through.The stage in which fluid flows into the contractile vacuole is called diastole & contraction or expulsion of water is called systole. These contractions and fillings are cyclic and take several seconds.With evolution, contractile vacuoles are lost in multicellular organisms but are still found in unicellular organisms like amoeba and paramecium.