The answer is 2- circulatory and excretory
<span>300 to 400. However the older a women gets the more the number goes down. We are born with all the eggs we will ever need but by the time we hit puberty the number already decreases to 300,000</span>
The general function of lactase is to regulate cell processes. It is an enzyme, and enzymes act as catalysts of chemical reactions within the body. It regulates different chemical reactions including breakdown of food substances, etc.
I think nephrons......................................................
