kidney pics Flashcards
where is this?
cortex
which is distal which is proximal?
where is this?
can the glomerulus be idetified?
proximal = filled with pink
distal = empty center
its in the cortex;
yes it can be identifies
what does the thin limb do?
what does the thick limb do?
what are their respective epithelium?
pulls water from the filtrate (concentrates urine)
the thick pumps ions out to decrease osmolarity
thick= cuboidal
thin=squamous
what is in this picture?
podocyte and its pedicle (arrow)
what do mesagial cells do?
engulf any protein accumulated on the capillary
how are endothelial cells in the kidney?
fenestrated with pedicles of podocytes
what does the proximal tubule do?
helps with reabsorption of glucose and sodium using microvilli
what does the distal tubule do?
when do they do their function?
Na and K retention
they work in presence of aldosterone
what does the collecting tube do? what happens if there is ADH?
it collects all the filtrate and if there is ADH it will lose some of its water
where is the macula densa? what epithelium they have?
in front of the afferent arteriole
they have columnar cells
what is this?
thin limb
where is this?
what are the T, CD, and the cells that have almost like a star in their center?
medulla
t = thin limb
star = thick limb
CD= collecting duct
how permeable is the collecting duct to water?
very impermeable
where do we acidify our urine?
collecting duct
what are the dark cells
and light cells?
dark = secretion of bicarbonate and protons
light = measures flow (ADH regulated aquaporin2 water channels)
what is a and b?
a = dark cells
b = light cell
what does the macula densa do?
measure flow
what do JGlomerular cells do?
they increase flow of filtrate releasing renin
explain the renin-angiotensin cascade?
low filtrate recognized by macula densa
JG cells secrete renin
renin gets to liver
liver cleaves angiotensinogen/produces angiontensin I
angiotensin I goes to lungs
angiotensin converting enzymes convert Angio I to Angio II
Angio II causes increase in blood volume
do distal or proximal tubules have microvilli?
distal no
proximal yes
who helps the macula densa and JG cells communicate?
mesagial cells
what is this?
macula densa
where is the concentration of urea, sodium and chloride higher in the medulla?
ther further down you go into the medulla
the ascending thick limb pull what out and what follows?
pulls Cl out and Na follows
