The right ventricle is one of four chambers

Heart chamber

aHeart chamber is a general term used to refer to any chambers of the mammalian heart. The heart consists of four chambers: the right and left atrium and the right and left ventricle. The top chambers are connected to the bottom chambers by valves and are separated by the coronary sulcus...

 (two atria

Atrium (anatomy)

In anatomy, the atrium , sometimes called auricle , refers to a chamber or space. For example, the term is used for a portion of the lateral ventricle in the brain and the blood collection chamber of the heart...

 and two ventricle

Ventricle (heart)

In the heart, a ventricle is one of two large chambers that collect and expel blood received from an atrium towards the peripheral beds within the body and lungs. The Atria primes the Pump...

s) in the human heart

Human heart

The human heart is a muscular organ that provides a continuous blood circulation through the cardiac cycle and is one of the most vital organs in the human body...

. It receives deoxygen

Oxygenation (medical)

Oxygenation occurs when oxygen molecules enter the tissues of the body. For example, blood is oxygenated in the lungs, where oxygen molecules travel from the air and into the blood...

ated blood

Blood

Blood is a specialized bodily fluid in animals that delivers necessary substances such as nutrients and oxygen to the cells and transports metabolic waste products away from those same cells....

 from the right atrium

Right atrium

The right atrium is one of four chambers in the hearts of mammals and archosaurs...

 via the tricuspid valve

Tricuspid valve

The tricuspid valve, or right atrioventricular valve, is on the right dorsal side of the mammalian heart, between the right atrium and the right ventricle. The normal tricuspid valve usually has three leaflets and three papillary muscles. They are connected to the papillary muscles by the chordae...

, and pumps it into the pulmonary artery

Pulmonary artery

The pulmonary arteries carry deoxygenated blood from the heart to the lungs. They are the only arteries that carry deoxygenated blood....

 via the pulmonary valve

Pulmonary valve

The pulmonary valve is the semilunar valve of the heart that lies between the right ventricle and the pulmonary artery and has three cusps. Similar to the aortic valve, the pulmonary valve opens in ventricular systole, when the pressure in the right ventricle rises above the pressure in the...

 and pulmonary trunk.

It is triangular in form, and extends from the right atrium to near the apex of the heart

Apex of the heart

The apex of the heart is the lowest superficial part of the heart.It is directed downward, forward, and to the left, and is overlapped by the left lung and pleura.-External anatomy:...

.

Boundaries

Its anterosuperior surface is rounded and convex, and forms the larger part of the sternocostal surface of the heart.

Its under surface is flattened, rests upon the diaphragm, and forms a small part of the diaphragmatic surface of the heart.

Its posterior wall is formed by the ventricular septum, which bulges into the right ventricle, so that a transverse section of the cavity presents a semilunar outline.

Its upper and left angle forms a conical pouch, the conus arteriosus

Conus arteriosus

The conus arteriosus is a conical pouch formed from the upper and left angle of the right ventricle in the chordate heart, from which the pulmonary trunk arises....

, from which the pulmonary artery

Pulmonary artery

The pulmonary arteries carry deoxygenated blood from the heart to the lungs. They are the only arteries that carry deoxygenated blood....

 arises.

A tendinous band, called the tendon of the conus arteriosus, extends upward from the right atrioventricular fibrous ring and connects the posterior surface of the conus arteriosus to the aorta.

The left ventricular wall is three times the thickness of the right. The right ventricle wall is thickest at the base and thins towards the apex.

The upper left corner of the right ventricle, where the deoxygenated blood

Blood

Blood is a specialized bodily fluid in animals that delivers necessary substances such as nutrients and oxygen to the cells and transports metabolic waste products away from those same cells....

  is pumped into the pulmonary artery

Pulmonary artery

The pulmonary arteries carry deoxygenated blood from the heart to the lungs. They are the only arteries that carry deoxygenated blood....

, is called the infundibulum

Infundibulum

An infundibulum is a funnel-shaped cavity or organ.* Lungs: The alveolar sacs of the lungs from which the air chambers open are called infundibula...

 or conus arteriosus

Conus arteriosus

The conus arteriosus is a conical pouch formed from the upper and left angle of the right ventricle in the chordate heart, from which the pulmonary trunk arises....

.

The cavity equals in size that of the left ventricle

Left ventricle

The left ventricle is one of four chambers in the human heart. It receives oxygenated blood from the left atrium via the mitral valve, and pumps it into the aorta via the aortic valve.-Shape:...

, and contains roughly 85 millilitre (7.65007650076501E-09 imp fl oz) in a normal adult.