Bio quiz Excreation

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  • Created by: Lordblip
  • Created on: 16-01-16 15:05
the removal of metabolic waste from the body
Excreation
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Waste substances that may be toxic or porduced in excess by the reactions inside cells
Metabolic waste
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Catalyses the breakdown of bilirubin
Kupffer cells
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one of the waste products from the breakdown of haemoglobin
Bilirubin
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a blood vessal that carries blood from the digestive system to the liver
Hepatic portal vein
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an excretory product formed from the breakdown of excess amino acids
Urea
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the process in which ammonia is converted to urea
Ornithine cycle
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the conversion of toxic molecules to less toxic or non-toxic molcules
Detoxification
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The functional unit of the kidney
Nephron
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a fine network of capillaries sourounded by a funnel-shaped capsule which collects the fluid and leads into the nephron
glomerulus
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useful substances are reabsorbed from the nephron into the bloodstream
selective reabsorption
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specialised cells that make up the lining of the bowmans capsule
Podocytes
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filtration at a molecular level
ultrafiltration
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microscopic folds of the cell surface membrane that increase cell surface area
Microvilli
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Diffusion that is enhanced by the action os proteins in a cell membrane
Facillitated diffusion
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The flow of molecules from a region of high concentration to a region of low concentration
Diffusion
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The transport of molecules against the concentration gradient using ATP
active transport
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special proteins in the cell surface membrane that actively transport sodium and potassium ions against their concentration gradients
sodium-potassium pumps
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The control and regulation of the water potential of the blood and body fluids
Osmoregulation
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the coiled portion of the nephron between the loop of henle and the collecting duct
distal convoluted tubule
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released from the pituitary gland and acts on the collecting ducts in the kidneys to increase the reabosrption of water
ADH
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receptor cells that monitor the water potential of the blood
osmoreceptors
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a part of the brain that contains neurosecretory cells and varius receptors that monitor the blood
hypothalamus
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specialised cells that act like nerve cells but release a hormone into the blood
Neurosecretory cells
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is the hind part of the pituitary gland which releases ADH
posterior pituitary gland
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Other cards in this set

Card 2

Front

Waste substances that may be toxic or porduced in excess by the reactions inside cells

Back

Metabolic waste

Card 3

Front

Catalyses the breakdown of bilirubin

Back

Preview of the front of card 3

Card 4

Front

one of the waste products from the breakdown of haemoglobin

Back

Preview of the front of card 4

Card 5

Front

a blood vessal that carries blood from the digestive system to the liver

Back

Preview of the front of card 5
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