Urinary System Flashcards
Where is the kidney located in the body?
retroperitoneum (outside the rest of the abdominal organs)
What are the layers of connective tissue that cover the kidneys?
renal fascia, perirenal fat capsule, fibrous capsule
What are the main functions of the urinary system(3)?
filtering/excretion, regulation, hormone production
What are the two products that leave the kidney?
clean blood and waste (urine)
What is in waste excreted from kidneys?
salts, water, other waste
What is in the clean blood excreted from the kidneys?
cells, proteins, nutrients, ions, salts, water
What is the name of the blood vessels that take blood to and from the kidneys?
renal arteries and renal viens
What is the outer portion of the kidney called?
renal cortex
What is the inner portion (and the location of renal pyramids/columns) called?
renal medulla
What structures hold the collecting ducts?
renal pyramids
What is the space between the renal pyramids called?
renal column
What is the name of the tubes that deliver urine to the urinary bladder?
ureters
What is the structural/functional unit of the kidney?
nephron
Why are the capillaries of the glomerulus fenestrated?
small enough that cells can’t get through but filtrate can
What structure surrounds the glomerulus?
Bowmans capsule
Which layer of Bowmans contains podocytes?
visceral
What order does the filtrate flow through the tubules?
PCT, descending limb, loop of henle, ascending limb, DCT
Where does filtrate go after it leaves the distal convoluted tubule?
collecting ducts
Where do collecting ducts dump into?
renal pelvis
What is osmolarity?
amount of all molecules dissolved in 1L
What is the vasa recta?
capillaries surrounding the loop of henle
Where are the filtration slits?
between podocytes
What does a podocyte do?
its feet surround the glomerulus capillaries to allow filtrate to enter Bowmans capsule
Where do things that leave PCT go to?
peritubular capillaries
What is tubular reabsorption?
filtrate back to blood