What is the heart? & It’s functions

The heart pumps blood through the network of arteries and veins called the cardiovascular system.The heart is a muscular organ about the size of a fist, located just behind and slightly left of the breastbone.The human heart is an organ that pumps blood throughout the body via the circulatory system, supplying oxygen and nutrients to the tissues and removing carbon dioxide and other wastes. The heart is roughly the size of a large fist and weighs between about 10 to 12 ounces (280 to 340 grams) in men and 8 to 10 ounces (230 to 280 grams) in women.The right atrium and right ventricle together make up the “right heart,” and the left atrium and left ventricle make up the “left heart.” A wall of muscle called the septum separates the two sides of the heart.The human heart has four chambers: two upper chambers (the atria) and two lower ones (the ventricles). The heart’s outer wall consists of three layers. The outermost wall layer, or epicardium, is the inner wall of the pericardium.  The middle layer, or myocardium, contains the muscle that contracts. The inner layer, or endocardium, is the lining that contacts the blood.A double-walled sac called the pericardium encases the heart, which serves to protect the heart and anchor it inside the chest. Between the outer layer, the parietal pericardium, and the inner layer, the serous pericardium, runs pericardial fluid, which lubricates the heart during contractions and movements of the lungs and diaphragm.

Human Heart

What is Parts of the heart?

  • The two top chambers are the right atrium and the left atrium. They receive the blood entering the heart.
  • The two bottom chambers are the right ventricle and the left ventricle. These pump blood out of the heart. A wall called the interventricular septum is between the two ventricles.
  • Left atrium. Left auricle.
  • Right atrium. Right auricle.
  • Interventricular septum and septal papillary muscles.
  • Right ventricle and papillary muscles.
  • Left ventricle and papillary muscles.

What is most important part of the heart?

When your heart functions normally, all four chambers work together in a continuous and coordinated effort to keep oxygen-rich blood circulating throughout your body.The left and right ventricles are stronger pumps. The left ventricle is the strongest because it has to pump blood out to the entire body.

What are three main functions of the heart?

Pumping hormones and other vital substances to different parts of the body.

Maintaining blood pressure.

Receiving deoxygenated blood and carrying metabolic waste products from the body and pumping it to the lungs for oxygenation.

Pumping oxygenated blood to the other body parts.

Why is the heart important?

The heart is important because it pumps blood around your body, delivering oxygen and nutrients to your cells and removing waste products.

What are three layers of the heart?

These three layers of the heart are embryologically equivalent to the three layers of blood vessels: tunica adventitia, tunica media, and tunica intima, respectively.The wall of the heart separates into the following layers, epicardium, myocardium, and endocardium.

What is lower part of the heart called?

The heart has four chambers, two upper (atrium) and two lower (ventricle), with one atrium and one ventricle on both the right and left side of the heart.

Which fruit is best for the heart?

Berries are also rich in antioxidants like anthocyanins, which protect against the oxidative stress and inflammation that contribute to the development of heart disease.Strawberries, blueberries, blackberries and raspberries are jam-packed with important nutrients that play a central role in heart health.

Which is the best exercise for heart?

Heart-pumping aerobic exercise is the kind that doctors have in mind when they recommend at least 150 minutes per week of moderate activity. Ideally, at least 30 minutes a day, at least five days a week. Examples: Brisk walking, running, swimming, cycling, playing tennis and jumping rope.

Which is called heart of heart?

SA node helps to generate impulses and initiates heartbeat.SA node also called Sinu- Atrial node and PACEMAKER is called heart of heart.

What is the basic structure of the heart?

The right atrium receives blood from the superior and inferior vena cavas and the coronary sinus; blood then moves to the right ventricle where it is pumped to the lungs.The heart is divided into four chambers consisting of two atria and two ventricles; the atria receive blood, while the ventricles pump blood.

What is inside of heart?

A thin layer of tissue, the pericardium, covers the outside, and another layer, the endocardium, lines the inside. The heart cavity is divided down the middle into a right and a left heart, which in turn are subdivided into two chambers.The heart consists of several layers of a tough muscular wall, the myocardium.

How can I make my heart strong?

  1. Quit smoking. Quitting smoking is tough.
  2. Eat heart-healthy foods.
  3. Don’t forget the chocolate. The good news: chocolate and wine contribute to heart health.
  4. Don’t overeat.
  5. Get moving. Your heart is a muscle and, as with any muscle, exercise is what strengthens it.
  6. Stress less.

Which part of heart contains pure blood?

The left half of the heart collects and pumps pure (oxygenated), blood from the lungs to all parts of the body.

Where is the heart left or right?

The heart has four distinct chambers. The left and right atria are at the top, and the left and right ventricles at the bottom.The heart is in the chest, slightly left of center. It sits behind the breastbone and between the lungs.

What color is your heart inside your body?

It is a bright red colour and is filled with all of the ingredients needed to make energy.

How do you know if your heart is weak?

  1. Swelling in the legs, ankles and feet.
  2. Rapid or irregular heartbeat.
  3. Reduced ability to exercise.
  4. Persistent cough or wheezing with white or pink blood-tinged mucus.
  5. Shortness of breath with activity or when lying down.
  6. Fatigue and weakness.

What system controls the heartbeat?

The sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS). Heart rate is controlled by the two branches of the autonomic (involuntary) nervous system.

Why is the heart on the left?

This is because the heart’s bottom-left chamber (the ‘left ventricle’) is responsible for pumping oxygenated blood around the whole body, so it needs to be stronger and larger than the right ventricle, which only pumps blood to the lungs.

What does heart blockage feel like?

There is a narrow gap, big enough to drive through.The symptoms of an artery blockage include chest pain and tightness, and shortness of breath. Imagine driving through a tunnel. On Monday, you encounter a pile of rubble.

Can your heart repair itself ?

The rapid healing that follows a heart attack creates scar tissue in place of working muscle tissue.the heart does have some ability to make new muscle and possibly repair itself. The rate of regeneration is so slow, though, that it can’t fix the kind of damage caused by a heart attack.

Can ECG detect heart blockage?

The resting ECG is different from a stress or exercise ECG or cardiac imaging test. It does not show whether you have asymptomatic blockages in your heart arteries or predict your risk of a future heart attack.

I hope that you liked this article.

Thanking you!!

Author- Reena Singh Patel. (B.Sc.Nursing, M.Sc. Nursing, Pharmacist & others)

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