semilunar valve

  1. a heart valve with cusps shaped like half-moons; prevents blood from flowing back into the heart
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How To Use semilunar valve In A Sentence

  • The two coronary arteries of the heart arise from the systemic aorta immediately outside the semilunar valves, situated in the root of this vessel, and in passing right and left along the auriculo-ventricular furrows, they send off some branches for the supply of the organ itself, and others by which both vessels anastomose freely around its base and apex. Surgical Anatomy
  • The ventricular septum and the atrioventricular and semilunar valves were unremarkable.
  • The muscular substance of the heart itself is supplied with nourishment by two little arteries called the _coronary arteries_, which start from the aorta just above two of the semilunar valves. A Practical Physiology
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