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Stress (biology) Schematic overview of the classes of stresses in plants. Neurohormonal response to stress. Stress, whether physiological, biological or psychological, is an organism's response to a stressor such as an environmental condition. [1] When stressed by stimuli that alter an organism's environment, multiple systems respond across the ...
Biotic stress. Biotic stress is stress that occurs as a result of damage done to an organism by other living organisms, such as bacteria, viruses, fungi, parasites, beneficial and harmful insects, weeds, and cultivated or native plants. [1] It is different from abiotic stress, which is the negative impact of non-living factors on the organisms ...
Died. October 16, 1982. (1982-10-16) (aged 75) Montreal, Quebec, Canada. Other names. Selye János (Hungarian) János Hugo Bruno " Hans " Selye CC (/ ˈsɛljeɪ / [dubious – discuss]; Hungarian: Selye János Hungarian pronunciation: [ˈʃɛjɛ]; January 26, 1907 – October 16, 1982) was a pioneering Hungarian-Canadian endocrinologist who ...
Cellular stress response. Cellular stress response is the wide range of molecular changes that cells undergo in response to environmental stressors, including extremes of temperature, exposure to toxins, and mechanical damage. Cellular stress responses can also be caused by some viral infections. [1] The various processes involved in cellular ...
In psychology, stress is a feeling of emotional strain and pressure. [1] Stress is a type of psychological pain. Small amounts of stress may be beneficial, as it can improve athletic performance, motivation and reaction to the environment. Excessive amounts of stress, however, can increase the risk of strokes, heart attacks, ulcers, and mental ...
Stress fibers are contractile actin bundles found in non-muscle cells. [1] They are composed of actin (microfilaments) and non-muscle myosin II (NMMII), and also contain various crosslinking proteins, such as α-actinin, to form a highly regulated actomyosin structure within non-muscle cells. [2] Stress fibers have been shown to play an ...
Abiotic stress. Abiotic stress is the negative impact of non-living factors on the living organisms in a specific environment. [1] The non-living variable must influence the environment beyond its normal range of variation to adversely affect the population performance or individual physiology of the organism in a significant way. [2]
Emotions are physical and mental states brought on by neurophysiological changes, variously associated with thoughts, feelings, behavioral responses, and a degree of pleasure or displeasure. [1][2][3][4] There is no scientific consensus on a definition. [5][6] Emotions are often intertwined with mood, temperament, personality, disposition, or ...