Talk:Renal System Histology
From Embryology
Practical Overview
- Kidneys, ureters, urinar bladder, urethra
Kidneys
- elimination of foreign substances
- regulation of the amount of water in the body
- control of the concentration of most compounds in the extracellular fluid
filtration - glomeruli of the kidney
selective - resorption and excretion - tubular system of the kidney
Blood Supply
- renal artery
- interlobar arteries (across medulla thru renal columns)
- arcuate arteries (cortico-medullary junction
- interlobular arteries
- afferent glomerular arterioles
- glomerular capillary network
- efferent glomerular arterioles
Glomerulus
- glomerulus - round (~0.2 mm in diameter) blind beginning of the nephron
- vascular pole - invaginated by a tuft of capillaries
- urinary pole - substances leave the capillaries enter the renal tubule
- Bowman's capsule - anatomical glomerulus is enclosed by two layers of epithelium.
- outer or parietal layer of Bowman's capsule form a simple squamous epithelium.
- inner layer, podocytes in the visceral layer, are extremely complex in shape.
- Mesangial cells in the glomerulus form the connective tissue that gives structural support to podocytes and vessels
Juxtaglomerular cells
- smooth muscle cells afferent glomerular arteriole
- epithelial-like cells
