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  2. Apoptosis - Wikipedia

    en.wikipedia.org/wiki/Apoptosis

    In contrast to necrosis, which is a form of traumatic cell death that results from acute cellular injury, apoptosis is a highly regulated and controlled process that confers advantages during an organism's life cycle. For example, the separation of fingers and toes in a developing human embryo occurs because cells between the digits undergo ...

  3. Identification of cell death - Wikipedia

    en.wikipedia.org/wiki/Identification_of_cell_death

    The role of cell death is the maintenance of tissue and organ homeostasis, for example, the regular loss of skin cells or a more active role seen in involuting tissues like the thymus. Cells die either by accident or design. In fact there are two mechanisms of cell death; necrosis and apoptosis (apoptosis in invertebrates is called cell ...

  4. Programmed cell death - Wikipedia

    en.wikipedia.org/wiki/Programmed_cell_death

    Programmed cell death ( PCD; sometimes referred to as cellular suicide [1]) is the death of a cell as a result of events inside of a cell, such as apoptosis or autophagy. [2] [3] PCD is carried out in a biological process, which usually confers advantage during an organism's lifecycle. For example, the differentiation of fingers and toes in a ...

  5. Stages of death - Wikipedia

    en.wikipedia.org/wiki/Stages_of_death

    The stages that follow shortly after death are: Corneal opacity or "clouding". Pallor mortis, paleness which happens in the first 15–120 minutes after death. Livor mortis, or dependent lividity, a settling of the blood in the lower (dependent) portion of the body. Algor mortis, the reduction in body temperature following death.

  6. Biological life cycle - Wikipedia

    en.wikipedia.org/wiki/Biological_life_cycle

    Reproduction completes and perpetuates the cycle. In biology, a biological life cycle (or just life cycle when the biological context is clear) is a series of stages of the life of an organism, that begins as a zygote, often in an egg, and concludes as an adult that reproduces, producing an offspring in the form of a new zygote which then ...

  7. Cell death - Wikipedia

    en.wikipedia.org/wiki/Cell_death

    Cell death. Cell death is the event of a biological cell ceasing to carry out its functions. This may be the result of the natural process of old cells dying and being replaced by new ones, as in programmed cell death, or may result from factors such as diseases, localized injury, or the death of the organism of which the cells are part.

  8. Five stages of grief - Wikipedia

    en.wikipedia.org/wiki/Five_stages_of_grief

    According to the model of the five stages of grief, or the Kübler-Ross model, those experiencing suddent grief following an abrupt realization (shock) go through five emotions: denial, anger, bargaining, depression, and acceptance. Since its establishment, new publications made commentaries on this model and add completion [1] .

  9. Life history theory - Wikipedia

    en.wikipedia.org/wiki/Life_history_theory

    A life history strategy is the "age- and stage-specific patterns" and timing of events that make up an organism's life, such as birth, weaning, maturation, death, etc. These events, notably juvenile development, age of sexual maturity, first reproduction, number of offspring and level of parental investment, senescence and death, depend on the ...

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