The heart consists mostly of cardiac muscle cells (or myocardium). The outstanding characteristics of the action of the heart are its contractility, which is the basis for its pumping action, and the rhythmicity of the contraction. The amount ofbloodpumped by the heart per minute (thecardiac ou...
cells that stimulate the other cardiac muscle cells. The pacemaker cells normally receive inputs from the nervous system to increase or decrease the heart rate depending on the body's needs. However, in the absence of nervous system stimulation, the pacemaker cells can produce a regular heart ...
US7226907 * 1999年12月21日 2007年6月5日 Zensun (Shanghai) Science & Technology Limited Contacting cardiac muscle cells with a neuregulin protein to activate the MAP kinase pathway in cardiac muscle cells and induce remodeling of cardiac muscle cell sarcomeric and cytoskeleton structures or cell-...
Control of cardiac muscle cell function by an endogenous nitric oxide signaling system. Proc. Natl Acad. Sci. USA 90, 347–351 (1993). CAS PubMed Google Scholar Han, X. et al. Muscarinic cholinergic regulation of cardiac myocyte ICa-L is absent in mice with targeted disruption of ...
In one cell type, Cre recombinase is under the control of the Tie2 promoter that is highly specific to endothelial cells [19], [20], and in the other, the recombinase is under the control of the muscle creatine kinase (MCK) promoter that is highly specific to skeletal and cardiac muscle...
SLIDE NAME MH 070 Cardiac Muscle Cells TISSUE Heart Right and Left Ventricles (human) STAIN Hematoxylin & Eosin FIXATIVE Zenker's Formaldehyde IMAGE SIZE 83,240 x 47,745 pixels 15 GB FILE SIZE 769 MB OBJECTIVE 40x PIXEL SIZE 0.3171 µm ...
they are generally much smaller than the contractile cells and have few of the myofibrils or filaments needed for contraction. Their function is similar in many respects to neurons, although they are specialized muscle cells. Myocardial conduction cells initiate and propagate the action potential (the...
structural support for cardiomyocytes and sustain the homeostasis of the cardiac extracellular matrix [13]. Mural cells in the vessel wall include smooth muscle cells and pericytes, which are vital for vascular integrity and cardiac function [14]. ECs constitute the inner layer of blood and ...
In contrast to skeletal muscle fiber, cardiac muscle cells are able tocontract spontaneouslyand possess aninherent rhythmicity. Modified heart muscle cells (sinoauricular node,atrioventricular node, bundle of His, and Purkinje fibers), discussed inChapter 11, function as the neural elements of the hea...
Muscle tissue:Muscle tissue is a soft tissue composed of elongated cells known as muscle fibers. These tissues are responsible for the contractions that allow our bodies and organs to contact and relax. This occurs largely due to the presence of specialized proteins known as contractile...