The entrance lies almost directly opposite from where the afferent and efferent

The entrance lies almost directly opposite from where

This preview shows page 25 - 33 out of 81 pages.

25
Image of page 25
Nephron Loop (Loop of Henle) The PCT makes an acute bend that turns the renal tubule toward the renal medulla. This turn leads to the nephron loop (loop of Henle) Divisions Descending limb Thick segment – cuboidal epithelium Thin segment – squamous epithelium Ascending limb Thick segment - cuboidal epithelium Thin segments - squamous epithelium 26
Image of page 26
27
Image of page 27
28
Image of page 28
Collecting Duct: Individual nephrons drain into a nearby collecting duct. Here the filtrate volume and concentration can be modified. Several collecting ducts converge into a larger papillary duct, which empties into a minor calyx. Functions Transport tubular fluid to the renal pelvis Adjusts tubular fluid’s composition Determines final osmotic concentration and volume of urine. 29
Image of page 29
Types of Nephrons Cortical Nephron Makes up 85% of the nephrons They are located almost entirely within the renal cortex except for a small part (nephron loop) that dips into the renal medulla. Juxtamedullary Nephron Glomerulus is located deep in the cortex of the kidney Just next to the medulla The loop of Henle is long and goes deep into the renal medulla. They play an important role in concentrating urine. 30
Image of page 30
Basic Functions of the Nephron To maintain homeostasis by regulating the volume and composition of blood. This involves the excretion of solutes – specifically metabolic waste products . 31
Image of page 31
Function of the Nephron
Image of page 32
Image of page 33

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture