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| ==Introduction== | | ==Introduction== |
| * '''Necrosis''' means the death of cells within the living body. | | * '''Necrosis''' means the death of cells within the living body. |
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| ===Loss of Blood Supply=== | | ===Loss of Blood Supply=== |
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− | * Necrosis due to interuption of blood supply to a portion of tissue is known as '''ischaemic necrosis''', or [[Ischaemia and Infarction - Pathology#Infarction|'''infarction''']]. | + | * Necrosis due to interuption of blood supply to a portion of tissue is known as '''ischaemic necrosis''', or [[Infarction|'''infarction''']]. |
− | * The effects of [[Ischaemia and Infarction - Pathology#Ischaemia|ischaemia]] on a tissue vary according to: | + | * The effects of [[Ischaemia|ischaemia]] on a tissue vary according to: |
| ** The tissue affected. | | ** The tissue affected. |
| *** Some tissues are more susceptible than others. | | *** Some tissues are more susceptible than others. |
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− | * Tissue [[Ischaemia and Infarction - Pathology#Ischaemia|ischamia]] can be brought about in three ways: | + | * Tissue [[Ischaemia|ischamia]] can be brought about in three ways: |
| ** Compression of the blood vessel. | | ** Compression of the blood vessel. |
| ** Narrowing of the lumen. | | ** Narrowing of the lumen. |
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| *** Commonly seen following a septicaemic condition when an embolus blocks the blood supply. | | *** Commonly seen following a septicaemic condition when an embolus blocks the blood supply. |
| **** When seen in calves, the possibility of [[Salmonellosis|salmonellosis]] must be kept in mind. | | **** When seen in calves, the possibility of [[Salmonellosis|salmonellosis]] must be kept in mind. |
− | *** Other causes are frostbite and [[Skin Environmental - Pathology#Ergot poisoning|ergot poisoning]]. | + | *** Other causes are frostbite and [[Ergot Poisoning|ergot poisoning]]. |
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| ==Calcification== | | ==Calcification== |
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| ** The cell breaks up into fragments that are engulfed by neighbouring cells or local macrophages. | | ** The cell breaks up into fragments that are engulfed by neighbouring cells or local macrophages. |
| *** Their remnants can be seen in the neighbouring cells’ cytoplasm. | | *** Their remnants can be seen in the neighbouring cells’ cytoplasm. |
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| + | [[Category:General Pathology]] |