CAS BI 108 Chapter Notes - Chapter 11.6: Apoptosis, Chromatin, Fetus
11 Mar 2014
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Necrosis: cells and tissues are damaged by mechanical means or toxins, or are starved of oxygen or nutrients. These cells often swell and burst, releasing their contents into the extracellular environment. Apoptosis: programmed series of events that result in cell death. But why does this happen: the cell is no longer needed. , one example is the connective tissue between web- like hands of a fetus cancer: the longer cells live, the more prone they are to genetic damage that could lead to. Signals lead to apoptosis: the signals are either external or internal programmed cell death, signals: hormones, growth factors, viral infection, toxins, dna damage, signals then active specific receptors, which then activate signal transduction pathways apoptosis. *note: some apoptotic pathways target mitochondria because the cell will then quickly die out because it cannot carry out respiration.
