Anita Akweshie-
formation of urine is the function of the
nephrons
-
what are the two stages in which urine formation occurs
ultrafiltration and selective reabsorption
-
where does the process of ultrafiltration occur
in the bowman's capsule
-
explain the process of ultrafiltration
small molecules are filtered out of the blood capillaries of the glomerulus and into the bowman's capsule to form filtrate known as glomerular filtrate
-
what is the product material of ultrafiltration
glomerular filtrate
-
where does the process of selective reabsorption occur
in the proximal convoluted tubule
-
explain the process of selective reabsorption
useful molecules are taken back from the filtrate and returned to the blood as the filtrate flows along the nephron
-
what blood components are filtered out of the blood during ultrafiltration
water
salts
glucose
urea
amino acids
inorganic ions
-
where does the selective reabsorption of glucose occur and by what process
in the proximal convoluted tubule by active transport
-
where does the selective reabsorption of water occur and by what processes
in the loop of henle by osmosis and active transport
-
where does the reabsorption of salts occur and by what process
in the loop henle by diffusion
-
what is urine
concentrated urea
-
where does the collecting duct lead
to the ureter
-
true or false
even some urea is reabsorbed back into the blood during selective reabsorption
true
-
what happens to the filtrate after selective reabsorption is complete
it eventually leaves the nephron
-
what is filtrate referred to on the exit of the nephron
urine
-
what happens to the urine after in leaves the nephron
flows out of the kidneys, along the ureters and into the bladder (temporarily stored)
-
what are the main components of the glomerular filtrate
amino acids
water
glucose
urea
inorganic ions
-
which inorganic ions are mainly present in the glomerular filtrate
Na+
K+
Cl-
