4 days ago · Heart, organ that serves as a pump to circulate the blood. It may be as simple as a straight tube, as in spiders and annelid worms, or as complex as the four-chambered double pump that is the …

Cardiac muscle tissue has autorhythmicity, the unique ability to initiate a cardiac action potential at a fixed rate—spreading the impulse rapidly from cell to cell to trigger the contraction of the entire heart.

Many forms of heart disease can be prevented or treated with healthy lifestyle choices. Heart disease symptoms depend on the type of heart disease. Coronary artery disease is a common heart …

Jan 26, 2024 · Electrical impulses make your heart beat, moving blood through these chambers. Your brain and nervous system direct your heart’s function. What is the function of the heart? Your heart’s …

May 22, 2025 · The cardiac cycle consists of two phases: systole (contraction) and diastole (relaxation). Some conditions that can affect the heart include heart attack, stroke, heart failure, and arrhythmia.

Mar 20, 2025 · To define cardiac, it is essential to understand its connection to the heart and overall cardiovascular health. Derived from the Greek word “kardia,” meaning heart, the term is used to …

May 9, 2026 · The meaning of CARDIAC is of, relating to, situated near, or acting on the heart. How to use cardiac in a sentence.

1. pertaining to the heart. 2. pertaining to the ostium cardiacum. cardiac arrest sudden and often unexpected stoppage of effective heart action.

Jan 10, 2024 · Cardiovascular disease (CVD) can refer to many conditions: Heart and blood vessel disease, also called heart disease, includes numerous problems, many of which are related to …

Aug 22, 2024 · As the heart beats, it pumps blood through a system of blood vessels called the circulatory system. The vessels are elastic tubes that carry blood to every part of the body. Blood is …