What are the main 4 parts 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.
What are the 3 heart layers?
The walls of the heart are composed of three layers:
- Epicardium – the outer layer.
- Myocardium – the middle, muscular layer.
- Endocardium – the inner layer.
What are the parts of heart and their function?
Chambers of the Heart The right atrium receives blood from the veins and pumps it to the right ventricle. The right ventricle receives blood from the right atrium and pumps it to the lungs, where it is loaded with oxygen. The left atrium receives oxygenated blood from the lungs and pumps it to the left ventricle.
What’s the main artery called?
the aorta
The largest artery is the aorta, the main high-pressure pipeline connected to the heart’s left ventricle. The aorta branches into a network of smaller arteries that extend throughout the body. The arteries’ smaller branches are called arterioles and capillaries.
What are the 4 heart valves?
The 4 heart valves include the following:
- Tricuspid valve. Located between the right atrium and the right ventricle.
- Pulmonary valve. Located between the right ventricle and the pulmonary artery.
- Mitral valve. Located between the left atrium and the left ventricle.
- Aortic valve.
How is the heart Divided?
Your heart is divided into four chambers. These include two on the right, called the right atrium and right ventricle, and two on the left, called the left atrium and left ventricle. The division protects oxygen-rich blood from mixing with oxygen-poor blood.
What are the 4 walls of the heart?
Layers of the Heart Wall Three layers of tissue form 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 are the 3 main parts of circulatory system?
The parts of your circulatory system are your:
- Heart, a muscular organ that pumps blood throughout your body.
- Blood vessels, which include your arteries, veins and capillaries.
- Blood, made up of red and white blood cells, plasma and platelets.
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