1 / 12

The Urinary System

PART 2. The Urinary System. Uriniferous Tubule. Figure 23.5a. The Nephron. Renal corpuscle Glomerulus and glomerular capsule Glomerulus – tuft of capillaries Capillaries of glomerulus are fenestrated Glomerular (Bowman’s) capsule Parietal layer – simple squamous epithelium

elaine-hart
Download Presentation

The Urinary System

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. PART 2 The Urinary System

  2. Uriniferous Tubule Figure 23.5a

  3. The Nephron • Renal corpuscle • Glomerulus and glomerular capsule • Glomerulus – tuft of capillaries • Capillaries of glomerulus are fenestrated • Glomerular (Bowman’s) capsule • Parietal layer – simple squamous epithelium • Visceral layer – consists of podocytes

  4. Renal Corpuscle and the Filtration Membrane Figure 23.6a

  5. Renal Corpuscle and the Filtration Membrane Figure 23.6c

  6. Tubular Section of Nephron • Filtrate proceeds to renal tubules from glomerulus • Proximal convoluted tubule • Loop of Henle • Descending limb • Thin segment • Thick segment • Distal convoluted tubule

  7. Micrograph through the Renal Medulla Figure 23.7

  8. Classes of Nephron • Cortical nephrons • 85% of nephrons • Juxtamedullary nephrons • 15% of nephrons

  9. Collecting Tubules (Collecting ducts) • Collecting tubules • Receive urine from distal convoluted tubules Figure 23.8

  10. Classes of Nephron Figure 23.9a

  11. Microscopic Blood Vessels • Nephrons associated with two types of capillary beds (a portal system) • Glomerulus • Fed and drained by arterioles • Afferent and efferent arterioles • Peritubular capillaries • Arise from efferent arterioles • Low-pressure, porous capillaries • Absorb solutes

  12. Microscopic Blood Vessels • Vasa recta • Thin-walled looping vessels • Part of the kidney’s urine-concentrating mechanism

More Related