Term
| Kidneys filter the volume of blood a day . |
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Definition
| kidneys filter the ENTIRE volume of blood 60 times a day. |
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Term
| Kidneys filter L per day. |
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Definition
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Term
| Kidneys filter mL per minute. |
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Definition
| 125 milliliters per MINUTE |
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Term
What is the ARTERIAL flow of the blood?
DR SLIA I AGEP |
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Definition
| DESCENDING AORTA ----> renal artery---> segmental artery ----> lobar artery ----> interlobar artery ----> arcuate artery --->interlobular artery ---> afferent arteriole ---> glomerulus ---> efferent arteriole ---> peritubular capillaries or VASA RECTA |
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Term
| Where is the interlobar artery located? |
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Definition
| between medullary/renal pyramids |
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Term
| Where is the Arcuate Artery located? |
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Definition
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Term
| Where is the interlobular artery located? |
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Definition
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Term
| How many afferent arterioles are there per nephron? |
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Definition
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Term
| Where is the glomerulus located? |
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Definition
| capillary bed within each nephron |
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Term
| What does the efferent arteriole do? |
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Definition
| drains blood from glomerulus |
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Term
| Where are the peritubular capillaries or VASA RECTA located? |
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Definition
| surround the length of the nephron-either one or the other- depending on the type of nephron |
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Term
What is the VENOUS flow?
IAIRI |
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Definition
| interlobular vein --> arcuate vein --> interlobar vein --> renal vein --> inferior vena cava |
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Term
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Definition
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Term
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Definition
| the FUNCTIONAL unit of the kidney |
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Term
| How many nephrons are in each kidney? |
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Definition
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Term
| Each nephron carries out all the processes of . |
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Definition
| each carries out all the processes of urine formation. |
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Term
| What are the vascular components? |
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Definition
| Afferent arteriole (AA) Glomerulus (Glom) Efferent Arteriole (EA) Peritubular Capillaries or VASA RECTA |
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Term
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Definition
delivers blood to the GLOM
one per nephron |
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Term
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Definition
-capillaries that filter blood to form filtrate
-fenestrated epithelium
- filters 20% of blood from the afferent arteriole |
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Term
| What does the GLOM filter? |
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Definition
| 20% of blood from the AFFERENT arteriole |
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Term
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Definition
| receives the 80% of blood not filtered through the glomerulus |
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Term
| Where do the peritubular capillaries or vasa recta branch from? |
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Definition
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Term
| Where does the blood from the peritubular capillaries drain to? |
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Definition
| drains into venous system wrapped around the tubular component |
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Term
| What are the pertubular capillaries important for? |
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Definition
| important in exchanges between blood (in capillaries) and filtrate (in tubular lumen) during URINE formation |
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Term
| What are the tubular components? |
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Definition
1. single layer of epithelium
2. Bowman's capsule (BC)
3. proximal convoluted tubule (PCT)
4. Loop of Henle (LOH)
5. Distal Convoluted Tubule (DCT)
6. Collecting Duct (CD) |
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Term
| Where are the single layer of epithelium cells located? |
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Definition
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Term
| What does the Bowman's capsule (BC) do? |
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Definition
| cups around the glomerulus and collects filtrate |
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Term
| what does the proximal convoluted tubule (PCT) do? |
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Definition
| where substances the body needs that are reabsorbed from filtrate and returned to the blood (in peritubular capillaries) |
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Term
| What is the descending loop of henle permeable and impermeable to? |
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Definition
| descending Loop of Henle is freely permeable to water but IMPERMEABLE to SALTS |
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Term
| What is the ascending loop of henle permeable and impermeable to? |
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Definition
| ascending loop of henle is freely permeable to salts but IMPERMEABLE to WATER |
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Term
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Definition
| DISTAL CONVOLUTED TUBULE - where substances the body does not need are secreted into the filtrate (into the tubular lumen, from the blood capillaries) |
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Term
| What is the CD? and what does it do? |
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Definition
| Collecting Duct - empties final urine product into the pyramids |
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Term
| What are the two types of nephrons? what is their percentage in the kidneys? |
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Definition
Cortical nephrons (85%)
Juxtamedullary nephrons (15%) |
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Term
| Where is the cortical nephron's LOH? |
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Definition
| almost entirely within the renal cortex (peritubular capillaries) |
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Term
| Where is the Juxtamedullary nephron's LOH located? |
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Definition
| deep within the medulla (vasa recta) |
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Term
| What is the juxtamedullary nephron specialized for? |
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Definition
| specialized to "superconcentrate" urine (reabsorb large amounts of water) |
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