urinary system Flashcards
what functions to kidneys have
adjustment of blood pressure
regulation of water and electrolyte concentration
waste, drug and toxin removal
what does ureters do
transport urine from the kidneys to the bladder
what does the bladder do
stores urine and expels it
What is urethra and what does it do
tube extending from the base of the bladder to the exterior of the body which allows urine to pass out of the body
what do nephrons do
filter blood and produce urine
what are the nephron processes
glomerular filtration
reabsorption
secretion
what is glomerular filtration
Movements of fluids and solutes
what is reabsorbtion the process of
the process of filtered substances moving back into the blood from the filtrate
what are the main organs of the urinary system
Kidneys and bladder
what is the main working organ of the urinary system
Kidneys
Where are kidneys found
high up in the back of the abdominal cavity and protected by lower ribs and diaphragm
what tissues are kidneys surrounded by
fibrous connective tissue
adipose (fat) tissue
How many neurons are in each kidney
1 million
what is the outmost section of the kidney called
renal cortex
where are the nephrons located in the kidney
renal cortex
what is the inner most layer of the kidney
the calyces
what does the medulla do in the kidney
collects ducts that help maintain the body’s salt and water balance
what is the role of the nephron
To filter the blood so that the waste products and water can be excreted as urine
what are the two parts of nephron’s
Renal corpuscle
rental tubule
what does the renal corpuscle do
filters the blood
what does the renal tubule do
reabsorbs good stuff back into the blood
what is glomerular filtration
it is the movement of fluid and solutes from the blood through a wall of the glomerular capillaries into the glomerular
what is glomerular filtration
it is the movement of fluid and solutes from the blood through a wall of the glomerular capillaries into the glomerular
what is reabsorbtion
the process of some filtered substances moving back into the blood from the filter are in the tubules
what is secretion
the movement of substances from the blood into the filtrate to excrete harmful products (opposite of reabsorbtion)
what are the commonly secreted substances
potassium
hydrogen
urea
