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  2. Positive feedback - Wikipedia

    en.wikipedia.org/wiki/Positive_feedback

    Positive feedback is used in digital electronics to force voltages away from intermediate voltages into '0' and '1' states. On the other hand, thermal runaway is a type of positive feedback that can destroy semiconductor junctions. Positive feedback in chemical reactions can increase the rate of reactions, and in some cases can lead to explosions.

  3. List of systems of the human body - Wikipedia

    en.wikipedia.org/wiki/List_of_systems_of_the...

    This is an accepted version of this page This is the latest accepted revision, reviewed on 4 March 2025. List of organ systems in the human body Part of a series of lists about Human anatomy General Features Regions Variations Movements Systems Structures Arteries Bones Eponymous Foramina Glands endocrine exocrine Lymphatic vessels Nerves Organs Systems Veins Muscles Abductors Adductors ...

  4. Hypothalamic–pituitary–gonadal axis - Wikipedia

    en.wikipedia.org/wiki/Hypothalamic–pituitary...

    One of the most important functions of the HPG axis is to regulate reproduction by controlling the uterine and ovarian cycles. [18] In females, the positive feedback loop between estrogen and luteinizing hormone help to prepare the follicle in the ovary and the uterus for ovulation and implantation.

  5. Human body - Wikipedia

    en.wikipedia.org/wiki/Human_body

    The internal human body includes organs, teeth, bones, muscle, tendons, ligaments, blood vessels and blood, lymphatic vessels and lymph. The study of the human body includes anatomy, physiology, histology and embryology. The body varies anatomically in known ways. Physiology focuses on the systems and organs of the human body and their functions.

  6. Tubuloglomerular feedback - Wikipedia

    en.wikipedia.org/wiki/Tubuloglomerular_feedback

    In the physiology of the kidney, tubuloglomerular feedback (TGF) is a feedback system inside the kidneys. Within each nephron , information from the renal tubules (a downstream area of the tubular fluid ) is signaled to the glomerulus (an upstream area).

  7. Reward system - Wikipedia

    en.wikipedia.org/wiki/Reward_system

    The reward system (the mesocorticolimbic circuit) is a group of neural structures responsible for incentive salience (i.e., "wanting"; desire or craving for a reward and motivation), associative learning (primarily positive reinforcement and classical conditioning), and positively-valenced emotions, particularly ones involving pleasure as a core component (e.g., joy, euphoria and ecstasy).

  8. Organ system - Wikipedia

    en.wikipedia.org/wiki/Organ_system

    Main article: List of systems of the human body. Nervous system in a human body. There are 11 distinct organ systems in human beings, [2] which form the basis of human anatomy and physiology. The 11 organ systems: the respiratory system, digestive and excretory system, circulatory system, urinary system, integumentary system, skeletal system ...

  9. Hodgkin cycle - Wikipedia

    en.wikipedia.org/wiki/Hodgkin_Cycle

    The Hodgkin cycle represents a positive feedback loop in which an initial membrane depolarization leads to uncontrolled deflection of the membrane potential to near V Na. The initial depolarization must reach or surpass a certain threshold in order to activate voltage-gated Na + channels .