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Lecture 34
Urinary I
21
Anatomy
Undergraduate 2
12/07/2010

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Term
kidneys location
Definition
-abdominal cavity
-retroperitoneal
-T12-L3
Term
kidney function
Definition
-clears blood of waste products/toxins
-regulates concentration of substances in body (water,salt)
-produces erthropoetin (affects RBC production)
-produces renin (influences BP)
Term
kidney structure
Definition
-lima bean shape
-hilum
Term
hilum
Definition
-indentation on medial side
-renal vessels enter/leave
-ureter leaves (transports urine)
Term
kidney coverings
Definition
-renal capsule-inner CT
-perirenal fat-adipose tissue
-renal fascia-CT that anchors kidney
Term
internal kidney
Definition
-renal cortex
-renal medulla
-major/minor calyces
-renal pelvis
Term
renal cortex
Definition
-outer
-contain glomeruli
Term
renal medulla
Definition
-inner
-contains primary tubules and vessels
Term
major/minor calyces
Definition
-funnel shaped chambers which receive urine produced by nephron
-located in renal pyramid
-join to form renal pelvis
Term
renal pelvis
Definition
-dilated, uppermost portion of ureter
-located at hilum
Term
kidney blood supply
Definition
-renal artery
-afferent arterioles
-glomerulus
-efferent arterioles
-peritubular capillaries
-venules
-renal vein
Term
vascular portion
Definition
glomerulus and peritubular capillaries
Term
glomerulus
Definition
-specialized network of capillaries
-in renal cortex between afferent/efferent arterioles
-composed of fenestrated epithelium
Term
fenestrated epithelium
Definition
specialized epithelium in which there are spaces between cells
Term
peritubular capillaries
Definition
-branches off efferent arteriole
-empty into kidneys venous system
-site of reabsorption of water and other substances
Term
tubular portion
Definition
Bowman's capsule
Term
Bowman's capsule
Definition
-double walled cup shaped
-surrounds glomerulus
-lined with epithelium
-podocytes
-filtration slits
Term
podocytes
Definition
specialized cells with extensions that surround glomerular capillaries
Term
filtration slits
Definition
spaces between foot processes
Term
filtration barrier
Definition
-fenestrated epithelium
-basement membrane of glomerular capillary
-thin membrane covering filtration slit
Term
drainage order
Definition
-proximal convoluted tubule
-loop of Henle
-distal convoluted tubule
-common collecting tubules
-renal pyramids
-minor/major calyces
-renal pelvis
-urinary bladder
-urethra
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