ˈhärt. plural hearts. 1. a. : a hollow muscular organ of vertebrate animals that by its rhythmic contraction acts as a force pump maintaining the circulation of the blood. could feel her heart pounding. b. : a structure in an invertebrate animal functionally analogous to the vertebrate heart. c.

heart 1. With great willingness or pleasure. 2. With the deepest feeling or devotion.

The heart is a muscular organ in most animals.This organ pumps blood through the blood vessels of the circulatory system. The pumped blood carries oxygen and nutrients to the body, while carrying metabolic waste such as carbon dioxide to the lungs. In humans, the heart is approximately the size of a closed fist and is located between the lungs, in the middle …

Heart definition, a hollow, pumplike organ of blood circulation, composed mainly of rhythmically contractile smooth muscle, located in the chest between the lungs and slightly to the left and consisting of four chambers: a right atrium that receives blood returning from the body via the superior and inferior vena cavae, a right ventricle that pumps the blood through the pulmonary …

Heart: the capacity for feeling for another's unhappiness or misfortune. Synonyms: bigheartedness, charity, commiseration… Antonyms: coldheartedness, hard-heartedness, inhumanity…

The human heart is one of the most important organs responsible for sustaining life. It is a muscular organ with four chambers. The size of the heart is the size of about a clenched fist. The human heart functions throughout a person’s lifespan and is one of the most robust and hardest working muscles in the human body.

04/10/2019 · Heart Definition The heart is a muscular organ that pumps blood throughout the body. It is located in the middle cavity of the chest, between the lungs. In most people, the heart is located on the left side of the chest, beneath the breastbone. The heart is composed of smooth muscle.

In humans and other mammals and in birds, the heart is a four-chambered double pump that is the centre of the circulatory system. In humans it is situated between the two lungs and slightly to the left of centre, behind the breastbone; it rests on the diaphragm, the muscular partition between the chest and the abdominal cavity. Britannica Quiz

The heart is the vital organ of the human body and is responsible for transportation in our body. The heart comprises four chambers: two stria or auricles (upper chambers), two ventricles (lower chambers) The wall of the heart is made up of three layers: Epicardium- This is a protective layer made of connective tissues.

18/09/2022 · Heart (1) It is a muscular organ, big as our fist, reddish brown in colour, situated between the 2 lungs in middle of thoracic cavity, surrounded by 2 layered sac. (2) It has different chambers to prevent the oxygen rich blood from mixing with blood containing carbon dioxide. (3) Heart is divided by septa into 2 halves i.e. the right and left.