10. Urinary Sytem Chp 20 Flashcards
(20 cards)
Functions of the kidneys
remove metabolic wastes regulate body fluid volume, ph and composition produce erythropoietin produce renin activate d which regulates calcium absoption
Renal Corpuscle
cluster of capillaries (glomerulus). surrounded by the glomerular capsule (bowman’s)
renin causes:
Vasoconstriction (decrease urine output), release aldosterone, release ADH
Renel tubule
receives the filtered fluid, passing it through the proximal convoluted tubule and delivering it to the descending loop of henle, ascending loop which becomes the distal convoluted tubule
collecting duct
combine into minor and major calyx
Glomerular capsule
is comosed of two layers of squamous epithelium
Glomerular filtration
occurs in glomerular capillaries which are highly permeable
GF is driven by
glomerular hydrostatic pressure (push things out) capsular hydrostatic pressure (general pressure within kidneys) plasma colloid osmotic pressure (try to pull fluid back in)
Urinary excretion
glomerular filtration + tubular secretion - tubular re absorption
renal clearance
the rate at which a particular chemical is removed from the plasma
micturition
controlled by the micturition reflex center
What is AA?
Afferent arterioles
What is the swirly glob?
Glomerulus
What is covering the swirly glob?
Glomerular capsule
What is labeled a? What is its function?
Proximal convoluted tubule
Receives the filtered fluid
What is labeled b?
What is the function?
Descending Loop (henle)
Receives the filtered fluid
What is labeled c?
What is its function?
Ascending Loop
receives the filtered fluid
What is labeled d (first d)?
What is the function?
Distal Convoluted Tubule
Receives the filtered fluid
What is labeled d? (the second d after the split)
What is it’s function?
Collecting duct
Afferent Artiole
has modified cells known as juxtaglomerular cells. These two group of cells are known as the juxtaglomerular apparatus and is involved in the secretion of renin
