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1. Dictionary

   heart

   /hɑːt/

   noun

   • 1. a hollow muscular organ that pumps the blood through the circulatory system by rhythmic contraction and dilation. In vertebrates there may be up to four chambers (as in humans), with two atria and two ventricles. Similar informal:ticker
   • ▪ the region of the chest above the heart: "holding hand on heart for the Pledge of Allegiance"
   • ▪ the heart regarded as the centre of a person's thoughts and emotions, especially love, compassion, or loyalty: "hardening his heart, he ignored her entreaties" Similar emotionsfeelingssentimentssoulmindbosombreastloveaffectionpassionsympathypityconcerncompassion
   • ▪ one's mood or feeling: "they had a change of heart" Similar compassionsympathyhumanityfeeling(s)fellow feelingconcern for othersbrotherly lovetender feelingstendernessempathyunderstandingkindnesskindlinessgoodwillbenevolencehumanitarianism
   • ▪ courage or enthusiasm: "they may lose heart as the work mounts up" Similar enthusiasmkeennesseagernessspiritdeterminationresolutionresolvepurposecouragebackbonespinenervestomachwillwill powerfortitudebraverystout-heartednessinformal:gutsspunkgritbottlevulgar slang:balls
   • 2. the central or innermost part of something: "right in the heart of the city" Similar centrecentral partmiddlehubcorenucleuskerneleyebosomnavelOpposite edge
   • ▪ the vital part or essence: "the heart of the matter" Similar essencequintessencecruxcorenubrootgistmeatmarrowpithsubstancesum and substanceessential partintrinsic naturekernelnucleusinformal:nitty-grittyOpposite peripherals
   • ▪ the close compact head of a cabbage or lettuce.
   • 3. a conventional representation of a heart with two equal curves meeting at a point at the bottom and a cusp at the top.
   • ▪ one of the four suits in a conventional pack of playing cards, denoted by a red heart-shaped figure.
   • ▪ a card of the suit of hearts.
   • ▪ a card game similar to whist, in which players attempt to avoid taking tricks containing a card of the suit of hearts.
   • 4. the condition of agricultural land as regards fertility: "a well-maintained farm in good heart"

   verb

   • 1. like very much; love: informal "I totally heart this song"

   Word Origin Old Englishheorte, of Germanic origin; related to Dutch hart and German Herz, from an Indo-European root shared by Latin cor, cord- and Greek kēr, kardia.

   Scrabble Points: 8

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2. en.wikipedia.org › wiki › HeartHeart - Wikipedia

   en.wikipedia.org › wiki › Heart

   • Cached

   2 days ago · Heart - Wikipedia. The heart is a muscular organ found in most animals. This organ pumps blood through the blood vessels of the circulatory system. [1] . The pumped blood carries oxygen and nutrients to the body, while carrying metabolic waste such as carbon dioxide to the lungs. [2] .

3. Videos

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     Circulatory System Physiology (Heart) Simplified

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     Anatomy and Function of the Heart

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     10 lines on human heart in english | human heart | define human heart | heart functions diagram |

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4. www.britannica.com › science › heartHeart | Structure, Function, Diagram, Anatomy, & Facts

   www.britannica.com › science › heart

   • Cached

   6 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 center of the circulatory system in humans, other mammals, and birds. Learn more about the heart in this article.

   • Author: The Editors of Encyclopaedia Britannica

   • In humans, the heart is situated between the two lungs and slightly to the left of center, behind the breastbone. It rests on the diaphragm, the mu...
   • The heart consists of several layers of a tough muscular wall, the myocardium. A thin layer of tissue, the pericardium, covers the outside, and ano...
   • The pumping of the heart, or the heartbeat, is caused by alternating contractions and relaxations of the myocardium. These contractions are stimula...
   • The rhythmic noises accompanying the heartbeat are called heart sounds. The two distinct sounds are heard, a low, slightly prolonged “lub” (first s...

5. www.careerpower.in › school › biologyHuman Heart Structure, Function, Diagram and Working

   www.careerpower.in › school › biology

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   Sep 19, 2024 · The heart consists of special structures within the heart that ensure the one-way flow of blood. The Human Heart consists of four valves that help in the proper functioning and flow of blood through the chambers.

   • Ans. There are total four chambers in a human hearts, in which the upper two chambers are Atria and the lower two chambers are ventricles.
   • Ans. The primary function of heart is to pump blood.
   • Ans. The heart rate of a healthy adult is 60-100 beats per minute (bpm).

6. en.wikipedia.org › wiki › Circulatory_systemCirculatory system - Wikipedia

   en.wikipedia.org › wiki › Circulatory_system

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   5 days ago · [1] [2] It includes the cardiovascular system, or vascular system, that consists of the heart and blood vessels (from Greek kardia meaning heart, and from Latin vascula meaning vessels). The circulatory system has two divisions, a systemic circulation or circuit, and a pulmonary circulation or circuit. [3]

7. en.wikipedia.org › wiki › CardiologyCardiology - Wikipedia

   en.wikipedia.org › wiki › Cardiology

   • Cached

   2 days ago · The heart is a muscle that squeezes blood and functions like a pump. The heart's systems can be classified as either electrical or mechanical, and both of these systems are susceptible to failure or dysfunction.

8. www.britannica.com › science › heart-rateHeart rate | Description, Monitoring, & Facts | Britannica

   www.britannica.com › science › heart-rate

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   Sep 20, 2024 · Heart rate, the number of times the ventricles of the heart contract and relax (that is, beat) per minute or other unit of time. In human beings, the normal resting heart rate among adults ranges from 60 to 100 beats per minute (BPM), whereas the normal resting heart rate for children is higher and.

9. www.innerbody.com › image › cardovInteractive Guide to the Cardiovascular System | Innerbody

   www.innerbody.com › image › cardov

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   4 days ago · The heart is a muscular pumping organ located medial to the lungs along the body's midline in the thoracic region. The bottom tip of the heart, known as its apex, is turned to the left, so that about 2/3 of the heart is located on the body's left side with the other 1/3 on right.