Question

Define All Parts of Heart..
And attach a diagram also of heart parts..





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Answer 1

Answer:

The upper two chambers are called atria (singular: atrium) and the lower two are known as ventricles (singular: ventricle). Muscular walls, called septa or septum, divide the heart into two sides. On the right side of the heart, the right atrium and ventricle work to pump oxygen-poor blood to the lungs.

Answer 2

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★Heart Chambers, Valves, Vessels, Wall and Conduction System★

• The heart is made up of four chambers. The upper two chambers are called atria (singular: atrium) and the lower two are known as ventricles (singular: ventricle).

• Muscular walls, called septa or septum, divide the heart into two sides.

• On the right side of the heart, the right atrium and ventricle work to pump oxygen-poor blood to the lungs.

• On the left side, the left atrium and ventricle combine to pump oxygenated blood to the body.

⚫Heart Valves⚫

There are four valves within the heart:

• The tricuspid valve is between the right atrium and the right ventricle.
• The pulmonary valve is between the right ventricle and the pulmonary artery.
• The mitral valve is between the left atrium and the left ventricle.
• The aortic valve is located between the left ventricle and the aorta.
• These valves open when blood passes through them and then close to keep the blood from flowing in the wrong direction.

⚫ Major vessels⚫

• The four chambers of the heart are attached to major veins or arteries that either bring blood into or carry blood away from the heart.

• The atria are the receiving stations of the heart. The right atrium receives its supply of oxygen-poor blood from the two largest veins in the body, the superior and inferior vena cava.

• The left atrium receives blood that has been oxygenated in the lungs from the pulmonary veins. Both atria then pump their supply of blood into the ventricles.

• The ventricles are the shipping stations of the heart. The right ventricle pumps oxygen-poor blood into the lungs through the pulmonary artery while the left ventricle pumps oxygenated blood to the body through the aorta, the largest artery in the body.

⚫Heart Wall⚫

• The heart wall consists of three layers: the endocardium, myocardium and epicardium.

• The endocardium is the thin membrane that lines the interior of the heart.

• The myocardium is the middle layer of the heart. It is the heart muscle and is the thickest layer of the heart.

• The epicardium is a thin layer on the surface of the heart in which the coronary arteries lie.

• The pericardium is a thin sac the heart sits in, often filled with a small amount of fluid, which separates the heart from the other structures in the chest such as the lungs.

⚫Conduction System⚫

• The conduction system is the heart's own built-in pacemaker. This special tissue sets the heart rate and allows the upper and lower chambers to communicate with each other so they can function in a coordinated fashion.