Urology Flashcards
(15 cards)
Urinary Process Hormones
ADH and Aldosterone
Urinary Output during excessive hydration
In times of excessive fluid, the body will excrete a large volume of hypotonic dilute urine to conserve the necessary salts
Urinary Output during dehydration
Excrete a small volume of hypertonic concentrated urine
Collecting Duct
Determines how much salt is actually lost in urine
The osmotic gradient created in the earlier regions of the nephron allows the kidney control in the final concentration of the urine
Distal Tubule
Regulates concentration of K+ and NaCl
Helps control pH by reabsorbing HCO3- and secreting H+
Ascending Loop of Henle
Freely permeable to NaCl but not water
Assists in the control of water and salt concentrations
Descending Loop of Henle
Freely permeable to water but not NaCl
Assists in the control of water and salt concentrations
Proximal Tubule
Reabsorbs 75% of NaCl and water of filtrate
Nutrients such as glucose and amino acids are reabsorbed here unless their concentration is higher than the absorptive capacity
Bowman’s Capsule
The sac that surrounds the glomerular capillaries
Glomerular Capillaries
Early portion of the nephron where the filtration process begins
Regions of Nephron
Renal corpuscle, Proximal tubule, Loop of Henly, Distal tubule and Collecting duct system
Medulla
Is divided into structures called renal pyramids, which dump urine into the major and minor calyces
From there, urine is sent to the bladder via the ureter
The urine exits the body via the urethra
Cortex
Outer region of the kidney
Renal Artery
Brings blood from the kidneys
Renal Vein
Brings blood to the kidneys