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Cardiac muscle (also called heart muscle or myocardium) is one of three types of vertebrate muscle tissues, the others being skeletal muscle and smooth muscle. It is an involuntary, striated muscle that constitutes the main tissue of the wall of the heart .
The endocardium, by secreting endothelins, may also play a role in regulating the contraction of the myocardium. [8] The swirling pattern of myocardium helps the heart pump effectively. The middle layer of the heart wall is the myocardium, which is the cardiac muscle—a layer of involuntary striated muscle tissue surrounded by a framework of ...
214384 Ensembl ENSG00000141052 ENSMUSG00000020542 UniProt Q8IZQ8 Q8VIM5 RefSeq (mRNA) NM_001146312 NM_001146313 NM_153604 NM_001378306 NM_145136 NM_146386 RefSeq (protein) NP_001139784 NP_705832 NP_001365235 NP_660118 NP_666498 Location (UCSC) Chr 17: 12.67 – 12.77 Mb Chr 11: 65.07 – 65.16 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Myocardin is a protein that in humans is ...
In the latter case, the disease creates blockages in the heart's blood supply, leading to tissue death which causes other areas of the heart to work harder, causing the heart to expand in size. [citation needed] Other possible causes include: Heart valve disease; Cardiomyopathy (disease of the heart muscle) [17] Pulmonary hypertension [18]
The right ventricle is equal in size to the left ventricle [citation needed] and contains roughly 85 millilitres (3 imp fl oz; 3 US fl oz) in the adult. Its upper front surface is circled and convex, and forms much of the sternocostal surface of the heart. Its under surface is flattened, forming part of the diaphragmatic surface of the heart ...
The heart is a muscular organ situated in the mediastinum.It consists of four chambers, four valves, two main arteries (the coronary arteries), and the conduction system. The left and right sides of the heart have different functions: the right side receives de-oxygenated blood through the superior and inferior venae cavae and pumps blood to the lungs through the pulmonary artery, and the left ...
Strain rate imaging is a method in echocardiography (medical ultrasound) for measuring regional or global deformation of the myocardium (heart muscle). The term "deformation" refers to the myocardium changing shape and dimensions during the cardiac cycle.
Due to the intrinsic property of myocardium that is responsible for the Frank-Starling mechanism, the heart can automatically accommodate an increase in venous return, at any heart rate. [1] [10] The mechanism is of functional importance because it serves to adapt left ventricular output to right ventricular output. [3]