lecture 28 Flashcards
all fluid we digest initially passes into where
it all initially goes into the ECF
whats urea, whys it generated
urea is a product of metabolism. when proteins are broken down, ammonia is generated. the liver makes urea from this ammonia as its less toxic. the urea is then expelled in urine
structure of the kidney allows what four things
blood to be brought in close proximety to the nephron for filtering, blood that has been filtered to leave the kidney, a pathway for urine to be removed from kidney, stored then excreted, protection
what is the range of the kidney, in vertebrae terms
kidneys go from T12-L3
where is the hilum located
on the medial surface of the kidney, at the L1 vertebrae
what are the three layers to a kidney
cortex, medulla and pelvis
whats the role of the fibrous capsule
protects the underlying tissue from abrasion and infection
connection points and role of the renal fascia
renal fascia runs in front of and behind the kidney, supporting and protecting the kidney also helps hold perirenal fat in place. it fuses anteriorly with the peritoneum and posteriorly with the muscles of the back
whats a renal column
renal column is the bit of renal cortex that extends down between the medullary pyramids
urine is produced by what and where does this occur
urine is produced by filtering of waste from blood into the nephrons. this happens in the renal cortex.
what does the nerve supply of the kidney come from
innervation is from a network of autonomic nerves and ganglia, this makes up the renal plexus.
what does the SNS do to the kidney
sympathetic nerves act to adjust diameter of the renal arterioles, thus regulating blood flow to kidneys
