What are the 12 parts of heart?

What are the 12 parts of heart?

Anatomy of the heart

• Left atrium and auricle. Left atrium. Left auricle.
• Right atrium and auricle. Right atrium. Right auricle.
• Interventricular septum and septal papillary muscles. Interventricular septum.
• Right ventricle and papillary muscles. Right ventricle.
• Left ventricle and papillary muscles. Left ventricle.

What are the sections of the heart?

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.

How many parts heart is divided?

The heart is divided into four chambers. The two upper chambers are called the atria. The right atrium and left atrium are separated by a wall of tissue called the atrial septum. The two lower chambers are called the ventricles, and are separated into the right and left ventricle by the ventricular septum.

What are the 4 layers of the heart?

Layers of the Heart Wall The outer layer of the heart wall is the epicardium, the middle layer is the myocardium, and the inner layer is the endocardium.

What is ventricle and atria?

The heart has four chambers. The upper two chambers are the atria, and the lower two are the ventricles (Figure A). The chambers are separated by a wall of tissue called the septum. Blood is pumped through the chambers, aided by four heart valves. The valves open and close to let the blood flow in only one direction.

What is the 3 parts of circulatory system?

The circulatory system consists of three independent systems that work together: the heart (cardiovascular), lungs (pulmonary), and arteries, veins, coronary and portal vessels (systemic). The system is responsible for the flow of blood, nutrients, oxygen and other gases, and as well as hormones to and from cells.

What are the 3 parts of the cardiovascular system?

While there are numerous mechanisms and processes that help regulate and promote the circulation of blood, there are three main parts of the cardiovascular system.

• Blood.
• Blood Vessels.
• Heart.

What are the four main functions of the heart?

The heart’s main function is to pump blood around the body. Blood carries nutrients and waste products and is vital to life. One of the essential nutrients found in blood is oxygen. The right side of the heart receives blood lacking oxygen (deoxygenated blood) from the body.

How many chambers are in the human heart?

The human heart has four chambers, or compartments. The top two chambers are called atria, and the bottom two are called ventricles. The left ventricle produces the pressure to push oxygenated blood that entered the heart from the lungs out to the rest of the body.

What structure prevents blood from flowing backward in the heart?

The valves are made of strong, thin flaps of tissue called leaflets or cusps. The leaflets open to let blood move forward through the heart during half of the heartbeat. They close to keep blood from flowing backward during the other half of the heartbeat. The mitral valve has only two leaflets; the aortic, pulmonic and tricuspid valves have three.

What are the parts of the human heart?

The heart as the nucleus of the cardiovascular system. The heart is the main organ of the cardiovascular system .