cardiac muscle

noun

: 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

Examples of cardiac muscle in a Sentence

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May Protect Heart Health Taurine is found in high levels in cardiac muscle. Jillian Kubala, Rd, Health, 5 Nov. 2024 Cardiologists may also recommend drugs to restore a more normal heartbeat, including beta blockers or calcium channel blockers, which work by lowering the heart’s pumping rate and giving the cardiac muscles a bit of a biological break. Lori Oliwenstein, TIME, 12 Sep. 2024 Muscle mass refers to the total amount of muscle in the body, including skeletal muscle mass and cardiac muscles. Andi Breitowich, Women's Health, 4 Aug. 2023 There are three main types of muscle tissue: smooth muscle lines the gut wall and organs, except the heart; cardiac muscle is striated and covers the heart; and skeletal muscle, which can be found in the arms and legs, is also striated. Lauren J. Young, Scientific American, 2 July 2023 See all Example Sentences for cardiac muscle 

Word History

First Known Use

1846, in the meaning defined above

Time Traveler
The first known use of cardiac muscle was in 1846

Dictionary Entries Near cardiac muscle

Cite this Entry

“Cardiac muscle.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cardiac%20muscle. Accessed 22 Nov. 2024.

Medical Definition

cardiac muscle

noun
: 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 discs, and in intact myocardial tissue is synchronized to function in contraction especially by electrical signals of extrinsic origin passing through gap junctions in the intercalated discs compare smooth muscle, striated muscle

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