Cardiac muscle


Cardiac muscle
A type of muscle with unique features only found in the heart. The cardiac muscle is the muscle of the heart and medically is called the myocardium ("myo-" being the prefix renoting muscle).

* * *

cardiac muscle n the principal muscle tissue of the vertebrate heart that is made up of elongated striated muscle fibers each of which consists of a single cell that has an intrinsic rhythm of contraction and relaxation even when isolated, is joined physically at its often branched ends to other such cells by intercalated disks, and in intact myocardial tissue is synchronized to function in contraction esp. by electrical signals of extrinsic origin passing through gap junctions in the intercalated disks compare SMOOTH MUSCLE, STRIATED MUSCLE

* * *

the specialized muscle of which the walls of the heart are composed. It is composed of a network of branching elongated cells (fibres) whose junctions with neighbouring cells are marked by irregular transverse bands known as intercalated discs.

* * *

the muscle of the heart, comprising the chief component of the myocardium and lining the walls of the large vessels joined to the heart; it is composed of fibers of striated but involuntary muscle. The composition and organization of its fibers resemble those of skeletal muscle, but instead of forming a syncytium, its branched, mononucleate cells are linked end to end by intercalated disks that provide both mechanical and ionic coupling for coordination of the entire muscle. See Plate 32.

Medical dictionary. 2011.

Look at other dictionaries:

  • Cardiac muscle — Dog Cardiac Muscl …   Wikipedia

  • cardiac muscle — noun the muscle tissue of the heart; adapted to continued rhythmic contraction • Syn: ↑heart muscle • Hypernyms: ↑muscle, ↑muscular tissue • Hyponyms: ↑pacemaker, ↑cardiac pacemaker, ↑ …   Useful english dictionary

  • cardiac muscle — noun Date: circa 1881 the principal involuntary muscle tissue of the vertebrate heart made up of striated fibers joined at usually branched ends and functioning in synchronized rhythmic contraction …   New Collegiate Dictionary

  • cardiac muscle — See muscle …   Dictionary of molecular biology

  • cardiac muscle — Anat. 1. a specialized form of striated muscle occurring in the hearts of vertebrates. 2. the myocardium. [1900 05] * * * …   Universalium

  • cardiac muscle — noun The striated and involuntary muscle of the vertebrate heart. Syn: myocardium …   Wiktionary

  • cardiac muscle — the specialized muscle of which the walls of the heart are composed. It is composed of a network of branching elongated cells (fibres) whose junctions with neighbouring cells are marked by irregular transverse bands known as intercalated discs …   The new mediacal dictionary

  • cardiac muscle — car′diac mus cle n. 1) anat. a specialized form of striated muscle in the hearts of vertebrates 2) anat. the myocardium • Etymology: 1900–05 …   From formal English to slang

  • Cardiac muscle cell — Latin cardiomyocytus; myocytus cardiacus Code TH H2.00.05.2.02004 A cardiac muscle cell or myocardiocyte (also known as cardiomyocyte[1] …   Wikipedia

  • Мышца Сердечная, Миокард, Слой Средний (Cardiac Muscle) — мышца стенки сердца. Сердечная мышца образована исчерченной поперечнополосатой мышечной тканью, состоящей из кардиомиоцитов, которые, нерегулярно соединяясь между собой, формируют сеть; кардиомиоциты соединяются между собой при помощи контактов,… …   Медицинские термины


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.