Question

How many parts are there in human heart ? Explain all the parts.


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Answer 1

How many parts are there in human heart ? Explain all the parts.

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Parts of the human heart

The heart is made up of four chambers: two upper chambers known as the left atrium and right atrium and two lower chambers called the left and right ventricles.

It is also made up of four valves: the tricuspid, pulmonary, mitral and aortic valves.

• The right atrium receives non-oxygenated blood from the body’s largest veins — superior vena cava and inferior vena cava — and pumps it through the tricuspid valve to the right ventricle.
• The right ventricle pumps the blood through the pulmonary valve to the lungs, where it becomes oxygenated.
• The left atrium receives oxygenated blood from the lungs and pumps it through the mitral valve to the left ventricle.
• The left ventricle pumps oxygen-rich blood through the aortic valve to the aorta and the rest of the body.

The coronary arteries run along the surface of the heart and provide oxygen-rich blood to the heart muscle.

The coronary arteries run along the surface of the heart and provide oxygen-rich blood to the heart muscle.A web of nerve tissue also runs through the heart, conducting the complex signals that govern contraction and relaxation. A sac known as the pericardium surrounds the heart.

The coronary arteries run along the surface of the heart and provide oxygen-rich blood to the heart muscle.A web of nerve tissue also runs through the heart, conducting the complex signals that govern contraction and relaxation. A sac known as the pericardium surrounds the heart.The outer layer of the pericardium surrounds the roots of the heart’s major blood vessels, and the inner layer is attached to the heart muscle.

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Answer 2

Answer:

The heart:

The human heart is a finely-tuned instrument that serves the whole body. It is a muscular organ around the size of a closed fist, and it sits in the chest, slightly to the left of center.

The heart beats around 100,000 times a day, pumping approximately 8 pints of blood throughout the body 24/7. This delivers oxygen- and nutrient-rich blood to tissues and organs and carries away waste.

The heart sends deoxygenated blood to the lungs, where the blood loads up with oxygen and unloads carbon dioxide, a waste product of metabolism.

Together, the heart, blood, and blood vessels — arteries, capillaries, and veins — make up the circulatory system.

The heart consists of four chambers:

The atria: These are the two upper chambers, which receive blood.

The ventricles: These are the two lower chambers, which discharge blood.

A wall of tissue called the septum separates the left and right atria and the left and right ventricle. Valves separate the atria from the ventricles.

The heart’s walls consist of three layers of tissue:

Myocardium: This is the muscular tissue of the heart.

Endocardium: This tissue lines the inside of the heart and protects the valves and chambers.

Pericardium: This is a thin protective coating that surrounds the other parts.

Epicardium: This protective layer consists mostly of connective tissue and forms the innermost layer of the pericardium.

How the heart works

The rate at which the heart contracts depends on many factors, such as:

activity and exercise

emotional factors

some medical conditions

a fever

some medications

dehydration

At rest, the heart might beat around 60 times each minute. But this can increase to 100 beats per minute (bpm) or more.

I think it'll be enough

in short , parts of heart : two atria,two ventricles,arteries capillaries,veins etc.

I HOPE IT HELPS YOU!