Urinary System Flashcards
The principal organ of the urinary system
Kidneys
The job of the kidneys
Cleansing of the blood of the toxins
Adjust the water content of blood
Tweak the levels of sodium and potassium
Adjust PH levels
Play a role in the regulation of blood pressure and the production of RBcS
Consists of the kidneys ureters, urinary bladder, urethera
Urinary system
The process of eliminating wastes from the body
Excretion
The organ systems that perform excretory processes
- Resp
- integumentary
- digestive
- urinary
Posterior to the parietal peritoneum
Retroperitoneal
Where do the kidneys lie
Against the posterior abdominal wall underneath the 12th rib
When the blood vessels, ureters, and nerves enter and leave the kidney through a slit.
Located in a concave notch on the medial side
Hilum
Forms the outer region of the kidneys and is the site of urine production
Renal cortex
Forms the inner region of the kidney and is the site of urine collection
Renal medulla
A tube like structure that channels urine to the urinary bladder
Ureter
The kidney receives blood supply via the
Renal artery- which branches off the abnormal aorta
Blood leaves the kidney via
Renal vein which empties into the inferior vena cava
The filtration units of the kidneys. Loops from the renal cortex into the renal medulla and back up to the cortex
Nephrons
A cluster of arteriolar branches of caprilles
Glomerulus
Nerves that enter the kidneys may stimulate this hormone which triggers the processes for restoring blood pressure
Renin
2 components of nephrons
- Renal corpuscle
2. renal tubule
Consists of the glomerulus and bow mans capsule
Renal capsule
Leading away from the glomerulus are a series of tube like structures
Renal tubule
Renal tubules four structures
- Proximal convoluted tubule
- loop of Henle ( descending and ascending limb )
- Distal convoluted tubule
- collecting duct
The creation of urine involves three processes
- Glomerular filtration
- Tubular reabsoroption
- tubular secretion
Water and small salutes filter out of the blood and into the surrounding space of the Bowmans capsule. Blood flows into the glomerulus through the afferent arteries
Glomerular filtration
The amount of fluid that has filtered out by both kidneys
Glomerular filtration rate
The presence of protein in the urine from damaged endothelium of the glomerular capillaries
Proteinuria