What is the morphology of cardiac muscle?
What is the morphology of cardiac muscle?
Unique to the cardiac muscle are a branching morphology and the presence of intercalated discs found between muscle fibers. The intercalated discs stain darkly and are oriented at right angles to the muscle fibers. They are often seen as zigzagging bands cutting across the muscle fibers.
What are 3 characteristics of cardiac muscle?
Four characteristics define cardiac muscle tissue cells: they are involuntary and intrinsically controlled, striated, branched, and single nucleated. Cardiac muscle is considered to be an involuntary tissue because it is controlled unconsciously by regions of the brain stem and hypothalamus.
What is the structure and function of cardiac muscle?
Cardiac muscle tissue works to keep your heart pumping through involuntary movements. This is one feature that differentiates it from skeletal muscle tissue, which you can control. It does this through specialized cells called pacemaker cells. These control the contractions of your heart.
What are the components of cardiac muscle?
Cardiac muscle is highly organized and contains many types of cell, including fibroblasts, smooth muscle cells, and cardiomyocytes. Cardiac muscle only exists in the heart. It contains cardiac muscle cells, which perform highly coordinated actions that keep the heart pumping and blood circulating throughout the body.
Is cardiac muscle Multinucleated?
Skeletal muscle fibers are cylindrical, multinucleated, striated, and under voluntary control. Cardiac muscle has branching fibers, one nucleus per cell, striations, and intercalated disks.
Is cardiac muscle Uninucleate?
Cardiac muscles are branched and cylindrical in shape. They are uninucleate cells. The cardiac cells of the heart are specialized excitable cells that are able to induce electrical impulses and give rise to the action potential. Cardiac muscle cells are also called cardiomyocytes.
What is the cardiac muscle?
Cardiac muscle (or myocardium) makes up the thick middle layer of the heart. It is one of three types of muscle in the body, along with skeletal and smooth muscle. The myocardium is surrounded by a thin outer layer called the epicardium (AKA visceral pericardium) and an inner endocardium.
Why is cardiac muscle Uninucleate?