Exam 2: Urinary Flashcards
Capsule of kidney
Thin/fibrous
Dense irregular CT
Renal pelvis
Widening of ureter
Major calyces
Broad spaces to collect urine — direct to renal pelvis
Minor calyces
Smaller collecting areas from each major calyx
Minor calyces contain
Renal papilla
Renal papilla is the
Tip of each renal pyramid
Renal sinus
Area surrounding renal pelvis, major/minor calyces
Renal sinus contains
Adipose
Components of renal cortex
Renal corpuscles
Tubules
Meudllary rays
Medullary rays extend from
Medulla into cortex
Primary portions of medullary rays
Loop of Henle and collecting tubules
Components of medulla
Renal pyramids
Renal columns
Renal pyramids
8-12/kidney
Parallel nephrons
Collecting ducts
Renal columns are areas separating the
Renal pyramids
Renal columns have
BV
Urinary tubes
Fibrous CT
General function of renal corpuscle
Blood filtration
3 parts of renal corpuscle
Bowman’s capsule
Glomerulus
Mesangial cells
Bowman’s capsule layers
Parietal layer
Visceral layer
Urinary space between
Parietal layer of Bowman’s capsule epithelium
Simple squamous
Visceral layer of Bowman’s capsule
Internal layer of podocytes
Urinary space receives filtered fluid from
Capillaries
Where is filtrate first collected
Urinary space (btw layers of Bowmans capsule)
Podocytes
Modified epi cells
Contain pedicels
Pedicels
Cover glomerular capillaries
Create filtration slits
Glomerulus
Fenestrated capillary network in visceral layer of Bowman’s
Glomerulus has a thick ___ which functions to ____
Basement membrane
Block large proteins
Glomerulus is located btw 2 arterioles so that
Tunica media can inc pressure to enhance filtration
Mesangial cells
Cells in renal corpuscles
Pericyte-like
Mesangial cells are present in areas lacking __
Podocytes
Functions of mesangial cells
Support
Filtration
Phagocytosis
Secrete cytokines
Proximal convolutes tubules epithelium
Simple cuboidal w/ long microvilli
Location of PCT
Cortex
Proximal straight tubule epi
Simple cuboidal
NO microvilli
Proximal straight tubule location
Medulla
Thin limbs consist of
Descending and ascending parts
Thin limbs epi
Simple squamous
Location of thin limbs
Medulla
Thick ascending limb epi
Simple cuboidal
NO microvilli