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Cardiac muscle (also called heart muscle or myocardium) is one of three types of vertebrate muscle tissues, the other being skeletal muscle and smooth muscle. It is an involuntary, striated muscle that constitutes the main tissue of the wall of the heart. The cardiac muscle (myocardium) forms a thick middle layer between the outer layer of the ...
Cardiac excitation-contraction coupling ( Cardiac EC coupling) describes the series of events, from the production of an electrical impulse (action potential) to the contraction of muscles in the heart. [1] This process is of vital importance as it allows for the heart to beat in a controlled manner, without the need for conscious input.
Bathmotropic. Bathmotropic often refers to modifying the degree of excitability specifically of the heart; in general, it refers to modification of the degree of excitability (threshold of excitation) of musculature in general, including the heart. It especially is used to describe the effects of the cardiac nerves on cardiac excitability. [1]
July 1, 2024 at 9:51 PM. SHANGHAI (Reuters) - Microsoft is consolidating its retail channels in mainland China, the firm said in response to media reports that it is closing its network of ...
v. t. e. Customer relationship management ( CRM) is a process in which a business or other organization administers its interactions with customers, typically using data analysis to study large amounts of information. [1] CRM systems compile data from a range of different communication channels, including a company's website, telephone (which ...
HANNA ARHIROVA. August 2, 2024 at 2:26 PM. PARIS (AP) — He calls himself a “troglodyte” with his brushes, oil paints, and large canvas among the photographers with expensive cameras and long ...
Workers have linked the U.S. and Canadian sides of the new Gordie Howe International Bridge spanning the Detroit River, a major step in bringing the monumental project to completion. The ...
All-or-none law. 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 ...