Excretion and The Kidney Flashcards
How does a dialysis machine rid the body of waste product “urea” using the terms: semi-permeable, permeable, diffusion, low concentration, high concentration, concentration gradient, surface area?
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How does the nephron work to filter materials from the blood?
The nephron filters materials from the blood through the walls of the glomerulus into Bowman’s capsule and enters. Not all materials can pass through the glomerulus walls because of their size.
What is the process of filtration that occurs in the glomerulus?
Glomerular filtration is the process where the fluid in the blood is filtered across the capillaries of the glomerulus.
How does permeability dictate what is forced filtered from the blood and what is not in the glomerulus?
The glomerulus wall is semi-permeable allowing only certain materials from blood through.
What is the nephric filtrate in relation to blood and urine?
The nephron filters the blood and the waste from the filtered blood then turns to urine.
How does nephric filtrate change as it makes its way through the nephron by analyzing components found in the filtrate as it passes through various parts of the nephron?
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When would you find things in the urine that you would not normally expect to find and relate this to certain abnormal conditions that could exist in the individual?
Diabetics could have glucose in their urine
What is the process of urinalysis and detecting the presence of glucose in the urine?
Urinalysis is urinating in a cup and having it tested. When tested glucose can be discovered in urine. Glucose can be found with Benedict’s test.
What is the metabolic consequences of the body not being able to use glucose as an energy source (type one diabetes) and the complications that it would produce(including the production of keynote acids when fats are burned for energy by the cells)?
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How can the use of pH indicator solutions be used in urinalysis to detect the presence of keynote acids in the urine?
pH tests test for acids and bases.
How does the nephron work to reabsorb materials from the blood?
Some reabsorption occurs through active transport in the proximal tubule. Protein to the bloodstream draws water back to the blood from the fluid surrounding the body cells (interstitial fluid). Some materials pass through the loop of Henle through diffusion to be reabsorbed.
How does blood pressure dictate what is forced filtered from the blood and what is not in the glomerulus?
The higher the blood pressure the more it is filtered through the glomerulus.
