Term
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Definition
| outer surface just deep to connective tissue capsule |
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Term
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Definition
| deeper extensions of cortex |
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Term
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Definition
| conical structures (pyramids) that are separated by renal columns |
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Term
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Definition
| funnels urine from pyramid into major calyx which then funnels urine into ureter |
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Term
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Definition
| where major callyx funnel into ureter |
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Term
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Definition
| functional unit of kidney |
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Term
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Definition
| cluster of capillary tufts plus visceral epithelial covering through which blood is filtered |
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Term
| capillary endothelial cells |
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Definition
| simple squamous epithelial cells that form an imperfect sheet containing pores or fenestrations |
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Term
| glomerular basement membrane |
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Definition
| thick structure consisting of three lamina fused underlying connective tissue of capillary endothelium and visceral layer of bowmans capsule |
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Term
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Definition
| epithelial cells with foot-like extensions that externally coat the glomerular capillaries making contact with the glomerular basement membrane |
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Term
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Definition
| phagocytic cells often found in the kidney where blood vessels closely parallel each other. believed to be important in maintaining integrity of basement membrane by removing filration residues |
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Term
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Definition
| acts as a funnel to collect material that leaks out of glomerulus. composed of two facing layers of simple squamous epithelium. |
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Term
| visceral layer of bowman's capsule |
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Definition
| inner layer that lies adjacent to glomerulus. cells become podocytes. |
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Term
| parietal layer of bowman's capsule |
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Definition
| outer layer that is continuous with proximal convoluted tubule at the urinary pole |
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Term
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Definition
| lies between visceral and parietal layers. continuous with lumne of PCT at the urinary pole. |
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Term
| proximal convoluted tubule |
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Definition
| extremely active in the process of reabsorption. lined by large simple cuboidal cells with spherical, cenrally located nucleus and a brushed border. abundant mitochondria so eosinophilic cytoplasm, esepecially at basal surface leading to striations. interdigitated lateral membranes so difficult to distinguish lateral cells boundaries. |
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Term
| thin segment of loop of Henle |
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Definition
| abrupt transition from PCT. cells consist of thick squamous epithelium with rounded nuclei that bulge into lumen. tend to be light staining. |
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Term
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Definition
| eosinophilic simple cuboidal cells with basal striations. smaller cells with more apical nuclei. lack a brushed border. cytoplasm not as eosinophilic. |
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Term
| juxtaglomerular apparatus |
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Definition
| function in blood pressure regulation. |
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Term
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Definition
| flattened edge of DCT where cells are taller and more tightly packed |
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Term
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Definition
| highly modified cells of the tunica media |
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Term
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Definition
| form triangular wedge between blood vessels and DCT |
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Term
| collecting tubules and collecting ducts |
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Definition
| simple cuboidal cells with spherical, dark staining nuclei. become simple columnar as collecting ducts merge to form larger ducts |
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Term
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Definition
| pale staining due to limited organelle. actively transport sodium and postassium. become predominant cell in the distal collecting ducts |
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Term
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Definition
| stain more darkly due to more abundant organelles. more abundant luminal microvilli. actively transport protons and bicarb ions. |
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Term
| papillary ducts of Bellini |
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Definition
| collecting tubules and collecting ducts continue merging |
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Term
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Definition
| where epithelium changes to transitional |
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Term
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Definition
| glomerulus plus bowmans capsule - always in cortex |
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Term
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Definition
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Term
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Definition
| capable of forming more concentrated urine |
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Term
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Definition
| muscularis consists of inner longitudinal (spiral) and outer circular layers of smooth muscle. lining of transitional epithelium resting on top of a lamina propria that is rich in elastic fibers. |
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Term
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Definition
| wall structure very similar to ureter except that muscularis is thicker and fibers oriented in all directions |
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Term
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Definition
| lined with transitional and stratified squamous epithelium |
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