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  1. dictionary.cambridge.org › english › heart-sinksSOMEONE'S HEART SINKS - Cambridge English Dictionary

    SOMEONE'S HEART SINKS definition: 1. to feel disappointed or to lose hope: 2. to feel disappointed or to lose hope: 3. you feel…. Learn more.

  2. training.seer.cancer.gov › heart › structureStructure of the Heart | SEER Training

    The human heart is a four-chambered muscular organ, shaped and sized roughly like a man's closed fist with two-thirds of the mass to the left of midline. The heart is enclosed in a pericardial sac that is lined with the parietal layers of a serous membrane. The visceral layer of the serous membrane forms the epicardium.

  3. www.britannica.com › science › human-cardiovascularHuman cardiovascular system | Description, Anatomy ...

    Jun 24, 2024 · human cardiovascular system, organ system that conveys blood through vessels to and from all parts of the body, carrying nutrients and oxygen to tissues and removing carbon dioxide and other wastes. It is a closed tubular system in which the blood is propelled by a muscular heart. Two circuits, the pulmonary and the systemic, consist of ...

  4. www.news-medical.net › health › Structure-andStructure and Function of the Heart - News-Medical.net

    Sep 4, 2022 · The heart rate is the number of times the heart beats in one minute. A healthy adult's resting heart rate varies between 60 and 100 beats a minute. Children usually have higher heart rates.

  5. www.yourdictionary.com › heartHeart Definition & Meaning | YourDictionary

    Heart definition: The area that is the approximate location of the heart in the body; the breast.

  6. dictionary.cambridge.org › dictionary › englishHEARTBEAT | English meaning - Cambridge Dictionary

    HEARTBEAT definition: 1. the regular movement or sound that the heart makes as it sends blood around your body: 2. the…. Learn more.

  7. www.oxfordlearnersdictionaries.com › definitionheart-rending adjective - Definition, pictures, pronunciation ...

    Definition of heart-rending adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.