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Psychoanalysis. In psychoanalytic theory, a defence mechanism is an unconscious psychological operation that functions to protect a person from anxiety-producing thoughts and feelings related to internal conflicts and outer stressors. [1][2][3] According to this theory, healthy people normally use different defence mechanisms throughout life.
Immune system. The immune system is a network of biological systems that protects an organism from diseases. It detects and responds to a wide variety of pathogens, from viruses to parasitic worms, as well as cancer cells and objects such as wood splinters, distinguishing them from the organism's own healthy tissue.
Anti-predator adaptation in action: the seal shark Dalatias licha (a–c) and the wreckfish Polyprion americanus (d–f) attempt to prey on hagfishes. First, the predators approach their potential prey. Predators bite or try to swallow the hagfishes, but the hagfishes have already projected jets of slime (arrows) into the predators' mouths.
Psychoanalysis was founded by Sigmund Freud. Freud believed that people could be cured by making their unconscious a conscious thought and motivations, and by that gaining "insight". The aim of psychoanalysis therapy is to release repressed emotions and experiences, i.e. make the unconscious conscious.
Mucosal immunology is the study of immune system responses that occur at mucosal membranes of the intestines, the urogenital tract, and the respiratory system. [1] The mucous membranes are in constant contact with microorganisms, food, and inhaled antigens. [2] In healthy states, the mucosal immune system protects the organism against ...
The adaptive immune system, also known as the acquired immune system, or specific immune system is a subsystem of the immune system that is composed of specialized, systemic cells and processes that eliminate pathogens or prevent their growth. The acquired immune system is one of the two main immunity strategies found in vertebrates (the other ...
Category:Defence mechanisms. Wikimedia Commons has media related to Defence mechanisms. The main article for this category is Defence mechanisms. These mechanisms were also called "ego defense mechanisms," as Sigmund Freud postulated that the ego uses these defense mechanisms to handle the conflict among the id, the ego and the super ego .
An immune response is a physiological reaction which occurs within an organism in the context of inflammation for the purpose of defending against exogenous factors. These include a wide variety of different toxins, viruses, intra- and extracellular bacteria, protozoa, helminths, and fungi which could cause serious problems to the health of the host organism if not cleared from the body.