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Adult zebrafish have a remarkable ability to completely regenerate cardiac muscle after injury. [7] There are similar genes in zebrafish and humans that control the development of the heart [8] and the phenomenal ability of zebrafish cardiomyocytes to proliferate in response to injury has made it a popular research model. When approximately 20% ...
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 .
Initial attempts to image the heart were confounded by respiratory and cardiac motion, solved by using cardiac ECG gating, faster scan techniques and breath hold imaging. Increasingly sophisticated techniques were developed including cine imaging and techniques to characterise heart muscle as normal or abnormal (fat infiltration, oedematous ...
Heart muscle is subject to two kinds of stress: physiologic stress, i.e. exercise; and pathologic stress, i.e. disease related. Likewise, the heart has two potential responses to either stress: cardiac hypertrophy, which is a normal, physiologic, adaptive growth; or cardiac remodeling, which is an abnormal, pathologic, maladaptive growth. Upon ...
Myostatin is a myokine that is produced and released by myocytes and acts on muscle cells to inhibit muscle growth. [7] Myostatin is a secreted growth differentiation factor that is a member of the TGF beta protein family. [8] [9] Myostatin is assembled and produced in skeletal muscle before it is released into the blood stream. [10]
Intercalated discs or lines of Eberth are microscopic identifying features of cardiac muscle. Cardiac muscle consists of individual heart muscle cells (cardiomyocytes) connected by intercalated discs to work as a single functional syncytium. By contrast, skeletal muscle consists of multinucleated muscle
Nastasic/Getty Images We tend to associate testosterone with male libido, muscle mass, hair growth, and basically everything that makes a biological male present as male.
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.