l>Heart Anatomy crate Hill | Heart therapy | Heart problems Richmond
Dr Michael Rowe is one Interventional Cardiologist through special interest in coronary angiography, balloon...

You are watching: Prevents backflow into the right ventricle

residence » Patient information » Conditions and Procedures » betterworld2016.orgmon Heart Anatomy

Normal heart Anatomy

The main role of the love is to supply oxygen-rich blood betterworld2016.orge every cell in the body.

The arteries are the passageways through which the blood is delivered and the veins space the passageways with which the blood is gathered and went back to the heart.

The adult love weighs between 200 to 425 grams (7 betterworld2016.orge 15 ounces) and is around the size of her fist. Your heart is a muscle, i m sorry unlike various other muscles the the body needs to work around the clock to store your blood circulating.

To recognize the anatomy and role of the heart, us have divided the heart into two sections - Exterior and Interior

Exterior Anatomy

Vena Cava

The vena cava is a large vein that brings deoxygenated (impure) blood back to the heart and empties that in betterworld2016.orge the right atriuma.


There room two atria, the ideal atrium, and also the left atrium, which are the two upper chambers the the four muscular chambers of the heart.

The appropriate atrium collection the impure blood native the vena cava and delivers it betterworld2016.orge the ideal ventricle. This shipment is regulation by the tricuspid valve.

The left atrium collection the oxygenated blood from the lungs, via the pulmonary veins and delivers it to the left ventricle. This delivery is regulated by the mitral valve.


There space two ventricles, right and also left, which are the two lower chambers that the four muscular chambers the the heart.

The best ventricle collects the impure blood native the appropriate atrium and also delivers it betterworld2016.orge the lungs because that purification (oxygenation). This distribution is regulated by the pulmonary valve.

The left ventricle collects the pure blood native the left atrium and delivers it betterworld2016.orge the aorta (main artery) from whereby it is pumped betterworld2016.orge the remainder of the body. This shipment is regulation by the aortic valve.

Pulmonary Artery

As betterworld2016.orgponent of the pulmonary circulation, the pulmonary artery carries the de-oxygenated blood indigenous the appropriate ventricle betterworld2016.orge the lungs for oxygenation.

Pulmonary Veins

Blood ~ oxygenation in the lungs, is brought back to the heart by pulmonary veins and also delivered to left atrium.


The Aorta the largest artery in the body, collection blood pumped native the left ventricle betterworld2016.orge branch and deliver the oxygen rich blood to assorted organs and also tissues in the person body.


The pericardium is the liquid filled sac the surrounds the heart. The love literally floats in this pericardial fluid.

The main role of the pericardium is to:

save the love within the chest cavity Act together a shock absorber avoiding the heart from over broadening when blood volume increases

Coronary Circulation

The coronary circulation consists of the blood vessels that supply blood to, and also remove blood from, the love tissue. Coronary arteries supply oxygen rich blood betterworld2016.orge the heart and the coronary veins remove the deoxygenated blood from the heart.

Serious heart damages may take place when the coronary circulation is blocked.

Coronary Arteriesy

Blood is offered to the heart by the coronary arteries. Two main coronary arteries branch off the aorta then branch right into several smaller arteries that supply oxygen wealthy blood to the heart.

Coronary Veins

The deoxygenated blood native the love muscle is built up by the coronary veins and also drained into the ideal atrium.

Circulatory system

The love acts a pump, transferring blood to the organs, tissues, and cells of your body through a betterworld2016.orgplex network the arteries, arterioles, and capillaries. Blood is returned to your heart through venules (small veins) and veins.

Interior Anatomy


The heart is a pump and also each contraction of the heart represents one heartbeat.

Pulse or Heart rate is the number of heartbeats every minute.

The heart price is managed by the mind and varies depending on, determinants such as age, stress, exercise, surrounding temperature, and hormones.

The heartbeat is a two betterworld2016.orgponent pumping action- Systole (contraction) and also Diastole (relaxation). Move your cursor end the labels to find out more.

Systole (Ventricular Contraction)

The series of tasks in systole which happens at one specific moment are:

The tricuspid and mitral valve close up door to protect against backflow right into the corresponding atria Blood from the right ventricle is pumped to the lungs with the pulmonary artery Blood indigenous the left ventricle is pumped to the rest of the body with the aorta The Vvena cava empties the deoxygenated blood right into the appropriate atrium The pulmonary veins empty the oxygenated blood right into the left atrium

In a normal relaxing adult, the love beats about 72 times every minute (Pulse 72), which way all the above activities happen in much less than one second.

Diastole (Ventricular rRelaxation)

The series of tasks in diastole which happens at one details moment are:

The tricuspid and also the mitral valve open up Deoxygenated blood native the best atrium flows to the right ventricle Oxygen well-off blood indigenous the left atrium flows to the left ventricle

In a normal resting adult, the heart beats about 72 times per minute (Pulse 72), which way all the over activities wake up in less than one second.

Heart Valves

The main duty of the love valves is betterworld2016.orge regulate and also prevent the backflow that the blood.

There room four important valves in the heart.

Tricuspid Valve

The tricuspid valve regulates blood flow in between the best atrium and also the right ventricle.

It stays clear of the backflow of blood to the ideal atrium when the best ventricle pumps blood to the lungs.

Mitral Valve

The mitral valve regulates the blood flow between the left atrium and also the left ventricle.

It stays clear of the backflow of blood to the left atrium once the left ventricle pumps blood v the aorta to the remainder of the body.

Pulmonary Valve

The pulmonary valve regulates the de--oxygenated blood native the ideal ventricle to the lungs because that purification.

Aortic Valve

The aortic valve regulates the oxygenated blood pumped native the left ventricle to the remainder of the body.

Conduction System

The heart"s pump energy betterworld2016.orges from a built-in electrical conduction system.

The sinoatrial node, SA node is dubbed the heart"s organic pacemaker that reasons the atria to contract when the electrical impulse is released.

See more: Onion Substitutes: Out Of Fresh Chopped Or Dried Minced Onion To Onion Powder

The signal is then passed on betterworld2016.orge the atrioventricular node, AV node, and also then betterworld2016.orge the conduction pathways (bundle the His) to provide electrical economic stimulation to the ventricles.