Urinary System Flashcards
Cortical labyrinth
Renal corpuscles and associated tubules
Medullary rays
Vertical strait ions in the cortex containing straight tubules (proximal and distal) of the nephron and collecting ducts
Tip of the papilla
Area cribosa
Renal columns
similar to Cortical tissue–renal corpuscles and associated tubules
No medullary rays
Medulla components
Renal columns
Medullary pyramids
Lobe
Renal pyramid and the cortical tissue at it’s base and sides (one half of each renal column)
Develop independently
Function independently
Lobule
Medullary ray in the center of the lobule and the surrounding cortical material
Represents a renal secretory unit
Renal secretory unit
One lobule
Collecting duct and a group of nephrons that drain into that duct
Nephron
Structural and functional unit of the kidney
Renal corpuscle and a tubule system
Juxtamedullary and cortical
Collecting duct +nephron
Uriniferous tubule
Junta medullary nephron
Concentrate urine saving H20
Renal corpuscle is a base of renal pyramid, between cortex and medulla
Cortical nephron
Corpuscle right under capsule
Filter blood
Renal corpuscle
Ultra filtrate from glomerulus flows through bowman’s capsule through the tubular segments
Flow of ultrafiltrate
Bowman's capsule PCT Proximal straight tubule (thick segment of henle's loop) Proximal straight tubule Thin descending limb of loop of henle Thin ascending limb of loop of henle Distal straight tubule/Thick ascending limb of the loop of henle Distal convoluted tubule Collecting duct Renal papilla Renal pyramid Renal calyces Ureter
Cortex (cortical labyrinth)
Renal corpuscles/bowman’s capsule
Proximal and distal convoluted tubules
Proximal straight tubule (rarely used)
Medullary Ray
Proximal straight tubule
Distal straight subtle/ TAL
Collecting ducts
Outer medulla
Proximal straight tubule
Distal straight tubule/Thick ascending limb)
Thin (ascending limb) segment loop of henle
Collecting ducts
Inner medulla
Thin segment henle’s loop (depending limb)
Thing ascending limb loop of henle
Collecting duct
Parietal layer of bowman’s capsule vs visceral layer
Parietal–simple squamous, lining bowman’s space
Visceral–podocytes around capillaries
Continuous with each other
Filtration apparatus
Glomerular capillary endothelium
Glomerular basement membrane
Visceral podocyte layer of Bowman’s capsule
Glomular capillary endothelium
Lacks diaphram for finest rations
Large number of AQP-1 for water through epithelium
Thick, negatively charged glycocalyx on luminal side with absorbed plasma protein
Barrier to negative charge
Three layers of glomerular basement membrane
Lamina rara externa
Lamina rara interna
Lamina dense
Glomerular basement membrane
3 layers
Produced by endothelial cells and podocytes
Physical barrier, and ion selective (repels anions, and restricts cations)
Lamina rara externa
Adjacent to podocytes
Rich in heparin sulfate
Repels negative charges
