Which of the following structures listed is not found in the renal corpuscles? (a) Bowman’s capsule, (b) podocytes, (c) the filtration membrane, (d) the proximal convoluted tubule.

If a drug is administered that causes selective vasodilation of the afferent arteriole, what effect would this have on glomerular filtration rate (GFR)?

These red dots characterize cells which are components of the juxtaglomerular apparatus.  The red dots are formed of Choose from the following: (A) renin (B) prostaglandins (C) erythropoitin (D) angiotensin I (E) angiotensin II

Which of these structures is least permeable to passage of material across the filtration membrane Choose from the following: (A) arrows - fenestra of the capillary endothelium (B) arrowhead - filtration slit bridging the gap between the pedicels