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
where does the selective reabsorption of glucose occur and by what process
in the proximal convoluted tubule by active transport