Urinary system Flashcards
What does the Urinary system consist of?
Kidneys
ureters
bladder
urethra
What are the working units of the kidneys called?
nephrons
What do the nephrons consist of?
Glomerulus
proximal tubule
loop of henle
distal tubule
collecting duct
What happens during filtration?
Glomeruli generate infiltrate of the plasma
What happens during reabsorption?
Tubules selectively reabsorb substrates from the infiltrate
what happens during secretion?
Tubules secrete substances into the urine
Where are the specialized capillary tufts located?
Between efferent and afferent ___________
Volume of ultrafiltrate
135-180 liters (L)/ day
What percentage of water is being reabsorbed?
99%
where does reabsorption and secretion of substances occur?
Within the tubules
Where is potassium reabsorbed and secreted into?
the urine
What are endocrine functions
Produce rennin for blood pressure control
CKD (chronic kidney disease)
Fewer functioning nephrons
Most common type of kidney disease
glomerular injury
Risk factors for CKD
diabetes
hyepertension
family history of kidney disease
cardiovascular disease
obesity
