Which of the following formed element activates the plasma clotting factors ?

Which one of the following circuit elements is an active component ?

Which of the following is used in blood clotting

Which of the following factors can active the JG cells to release renin?

Which of the following factor/s can influence enzyme activity ?

Which of the following is the main activating factor of aldosterone secretion during periods of dehydration ?

Which of the following is the main activating factor of aldosterone secretion during periods of dehydration ?