The original assassin returns with the digital release of StriderÂ® for the Xbox OneÂ®, Xbox 360Â®, PlayStationÂ®4, PlayStationÂ®3 and PC.
To address your question, here's a basic picture of the glomerulus, from Gray's Anatomy. The afferent arteriole is in red, and the efferent arteriole in blue. The glomerular filtration rate (GFR) depends on the pressure difference between the two, which affects the hydrostatic pressure at the glomerulus. Constriction of the afferent arteriole decreases the blood flow into the glomerulus and thus the glomerular hydrostatic pressure, which leads to a decrease in GFR.
-Freely filtered in the glomerulus. -Remainder that passes through the efferent arteriole must be secreted into tubule. -No reabsorption. Needs to be completely extracted from plasma in one passage through kidneys, so that all plasma entering the kidneys will be completely cleared of the substance.