Question

The capillary epithelium, basement membrane, and podocytes together form the ______. There is a _________ charge fixed on the layers, which repels plasma components.

• A. Filtration membrane and negative charge
• B. Glomerulus and negative charge
• C. Juxtamedullary Nephron and positive charge
• D. Nephron and positive charge

Answer 1

The correct option is A

Filtration membrane and negative charge

Filtration membrane (filter), is composed of three layers:

1.Fenestrated capillary epithelium: capillary pores prevent passage of blood cells

2.Visceral membrane made of podocytes (branching epithelium); basement membrane restricts all but the smallest proteins

3. Intervening basement membrane; podocyte pedicles (filtration slits) provide no restriction to passage of molecules