Biology 449 - Animal Physiology April 11 , 2008

Lecture 30 - Renal Physiology I

Introduction to osmoregulation

Overview of the kidney

Main functions

Anatomy of the renal system

Nephrons

Structure

Glomerular filtration

Secretion and reabsorption

Urine formation

Proximal tubule

Loop of Henle & initial distal tubule

End distal tubule & collecting duct

Mechanisms of reabsorption and secretion

Counter-current multipliers

Summary of nephron function

 

Terms to Know

Urine
Excretion

Urea
Creatinine
Uric acid

Kidney
Nephron
Renal cortex
Renal medulla
Renal pelvis
Ureter
Urinary bladder
Urethra

Renal corpuscle
Glomerulus
Afferent arteriole
Efferent arteriole
Vasa recta
Peritubular capillaries

Bowman's capsule
Podocyte
Filtration slit

Proximal tubule
Loop of Henle
Descending limb
Thin ascending limb
Thick ascending limb
Distal tubule
Collecting duct

Glomerular filtration
Glomerular filtration rate (GFR)
Secretion
Reabsorption

Tubular lumen
Apical or luminal membrane
Basolateral membrane

Readings

Lectures 30-31: Chapter 12, pages 521-563