Now, the macula density cells are found on our proximal convolutubial and they're found in close proximity to the granule cells. And these macular density cells are basically important because they are able to actually sense the concentration of sodium chloride inside the distal convoluted tubule. And they are also responsible for stimulating the granular cells to release that green and proteolytic enzyme that is responsible for controlling our blood volume and blood pressure. Now, the function of the agranial cells is not yet known. So let's summarize our discussion of the renal corpuscle. So, we see that the renal corpuscle is involved in filtering our blood.