Urinary System Flashcards
kidney
-structure where blood is filtered, location where filtered material can be reabsorbed by blood and places where what is not reabsorbed collects as urine
Outer layer of kidney
renal cortex
middle layer of kidney
renal medulla
inner layer of kidney
renal pelvis
nephron
microscopic functional units of kidney
- in renal CORTEX and glomerulus surrounding renal medulla
glomerular
-CAPILLARY in nephrons which filters
-in renal CORTEX
collected by Bowman’s capsule
From Bowman’s capsule, filtrates move to…
convoluted tubules
proximal tubules
where glucose and other useful sources are reabsorbed back into blood through walls of surrounding capillaries
After proximal tubules…
remain filtrate flows into LOOP OF HENTE, then into DISTAL TUBULE
tubular reabsorption
movement of useful material from filtrate back into bloodstream
in renal cortex…
distal tubes from numerous NEPHRONS empties into each collecting ducts (filtrate becomes more concentrated as urine)
Where does urine empty to
renal pelvis of kidney
amount of filtrate collected into Bowman’s capsule is regulated by…
blood pressure
What influence kidney on how they regulate how much water is lost from body?
NaCl (Sodium chloride)
When bp out of homeostatic range, kidney are employed by…
cardivascular system to return bp to normal
renin
enzymes RELEASED by kidney when REDUCED BP detected by baroreceptors in aorta and cartoid aorta
- creates angiotensin 1 from angiotensinogen produced by liver
- liver and kidney produce by enzymes that convert angio 1 to angio 2
angiotensin 2
RESTORES blood volume and BP by CONSTRICTING blood vessels, stimulating thirsts, aldosterone, and antidiuretic
aldosterone
hormones secreted by adrenal glands which INCREASE reabsorption of sodium; leads to increase reabsorption of chloride ions and water
anti-diuretic hormone
-secreted by pituitary gland and increase amount of water able to be reabsorbed from collecting ducts (kidney)
antidiuretic and aldosterone hormones…
-increase blood volume while decrease water lost from body in urine
diuretic
any substances that cause water to be LOST from body through urination
Hormone that causes the Kidneys to return more water to the blood while decreasing volume?
ADH
Kidney receives blood by…
renal artery
bowman’s capsule
encapsulates the glomerulus
-in renal CORTEX
Which two tubules does the renal medulla have?
-proximal and distal convoluted tubules
distal tubules
urea and drugs are removed from blood.
-pH in blood is adjusted with H+ ions
