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11 Cards in this Set
- Front
- Back
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excretion
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removal of waste producsts from metabolism
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elimination (egestion)
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removal of substances such as fibre that have not been involved in metabolic activities
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excretory substances:
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bile pigments, mineral salts, nitrogenous excretory products (ammonia, urea, uric acid)
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ammonia
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- very soluble
- very toxic - excreted by freshwater fisch |
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urea
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- fairly soluble
- fairly toxic - excreted by mammals |
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uric acid
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- almost insoluble
- almost harmless - excreted by birds |
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fibrous capsule
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outer membrane that protects the kidney
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cortex
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a lighter coloured outer region made up of renal capsules
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medulla
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a darker coloured inner region made up of loops of Henlé
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renal pelvis
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funnel shaped cavity, collects urine
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ureter
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tube that carries urine to the bladder
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