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19 Cards in this Set
- Front
- Back
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Reabsoption
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movement of a solute across a membrane and incorporation into the body
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Secretion
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release of a solute across a membrane, out of the body
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Renal corpuscle
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the initial blood-filtering component of a nephron. It consists of two structures: a glomerulus and a Bowman's capsule.
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Glomerulus
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Selection based on size(1/5 fluid will make it through)
Water and solutes from blood in are forced glomerular capsule Solutes include ions, glucose, fatty acids, amino acids, nitrogenous wastes Cells and large proteins are trapped in capillaries |
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Glomerular (Bowman’s) capsule
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Glomerulus is surrounded by the glomerular capsule
Capillaries are “holes”(actually protein complexes) Fenestrated capillary |
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Corical nephrons
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ASK
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Vasa recta
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capillar wraped around Loop of Henle and exchange of material, only in juxtamedullary nephrons
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Cortex
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outer layer
produce pee |
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Medulla
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inner layer
produce pee |
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Pelvis
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Pyramids points towards the pelvis(obsorb the pee produced)
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Ureter
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Muscular tubes called ureters run from each kidney to bladder
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Proximal Convoluted Tubule
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Function:
-Closely associated with peritubular capillaries bed Early reabsorption water, ions, glucose and amino acids, and some wastes into capillaries Active transport Secretion of nitrogenous wastes and toxins (Ex. aspirin, morphine) -By the end of the PCT 60% of original water is reabsorbed 65% of original ions are reabsorbed |
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Loop of Henle
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Associated with vasa recta capillary bed
Ascending loop is only permeable to ions Descending loop is only permeable to water |
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Distal Convoluted Tubule
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Finalizes urine composition
Influenced by hormones including antidiuretic hormone (ADH) and aldosterone Secretion of any extra wastes |
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Juxtamedullary nephrons
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juxta=next to
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Peritubular capillares
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wrap around the PCT
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function of urinary system
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Waste removal
Regulate blood pressure and osmolarity(ions) of body Regulate acidity of blood Detoxify free radicals |
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kidneys remove
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Urea - protein metabolism, produced in liver
Uric acid - DNA metabolism, produced in liver Creatinine - protein metabolism, produced in muscles |
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Urethra
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tube to external environment
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