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In physiology, the all-or-none law (sometimes the all-or-none principle or all-or-nothing law) is the principle that if a single nerve fibre is stimulated, it will always give a maximal response and produce an electrical impulse of a single amplitude. If the intensity or duration of the stimulus is increased, the height of the impulse will ...
Physiology (/ ˌ f ɪ z i ˈ ɒ l ə dʒ i /; from Ancient Greek φύσις (phúsis) 'nature, origin' and -λογία () 'study of') [1] is the scientific study of functions and mechanisms in a living system.
In physiology, splay is the difference between urine threshold (the amount of a substance required in the kidneys before it appears in the urine) and saturation, or T M, where saturation is the exhausted supply of renal reabsorption carriers.
Book of Optics (c. 1000) - Exerted great influence on Western science. [16] It was translated into Latin and it was used until the early 17th century. [ 17 ] The German physician Hermann von Helmholtz reproduced several theories of visual perception that were found in the first Book of Optics , which he cited and copied from.
Knut Schmidt-Nielsen (September 24, 1915 – January 25, 2007) [1] was a prominent figure in the field of comparative physiology and Professor of Physiology Emeritus at Duke University. Background [ edit ]
The first edition was published in 1956, the 10th edition in 2000 (the last before Guyton's death), and the 12th edition in 2010. The 14th edition (2020) is the latest version available. [ 2 ] It is the world's best-selling medical physiology textbook and has been translated into at least 15 languages.
Ganong's Review of Medical Physiology is a textbook in Physiology originally written by William Francis Ganong. [1] The first edition was published in 1963, [ 2 ] and the latest, 26th, edition was published in 2019, more than fifty years later than the first. [ 3 ]
The Starling principle holds that fluid movement across a semi-permeable blood vessel such as a capillary or small venule is determined by the hydrostatic pressures and colloid osmotic pressures (oncotic pressure) on either side of a semipermeable barrier that sieves the filtrate, retarding larger molecules such as proteins from leaving the blood stream.