Test 3😵💫 Flashcards
What is the primary waste product eliminated by the kidney?
Ammonia converted into urea by the liver and excreted by the kidney
Outer section of the kidney:
Cortex
Inner section of the kidney:
Medulla
Where does the nephron start?
Bowmans capsule (surrounds glomerulus)
What is the function of the glomerulus?
Filtration: capillary system of the kidney
What cells are involved with filtration in the kidney?
Podocytes–very leaky system and these cells have filtration slits
What types of things are not filtered at the glomerulus?
Proteins, larger compounds
What makes up the renal corpuscle?
Glomerular capillaries
Bowmans capsule
What are the different parts of the renal tubule?
Proximal convoluted tubule
Loop of henle
Distal convoluted tubule
What occurs at proximal convoluted tubule?
80% of filtrate is reabsorbed here
What meds work at the proximal convoluted tubules?
Drugs that target sodium and bicarb reabsorption
EX: mannitol, caffeine, carbonic anhydrase inhibitors
What is the function of the loop of henle?
Descending and Ascending limbs
Descending involved with water reabsorption
Ascending impermeable to water–active transport NKCC2
How does NKCC2 move ions?
Active transport than brings in one sodium, one potassium and 2 chloride
What is the function of the distal convoluted tubule?
Less water movement
dumps into collecting ducts
this is where the nephron ends
What are the collecting ducts?
Not part of the nephron
Final site for sodium reabsorption
most important site for potassium excretion
Where does filtration occur?
Renal corpuscle in the glomerulus