Heart: anatomy and function

2021-02-13 12:00 AM

The heart has a dual pump that transports blood away from it and back, and newly oxidized blood leaves the heart's side through the aorta.

The heart is a major, hollow organ composed of the heart muscle and connective tissue that acts as a pump to distribute blood throughout the body's tissues.

Heart shape

The heart is the heart of the circulatory system, providing oxygen and other important nutrients to the body needed to sustain life.

The heart has a dual pump that helps carry blood out of it and back. The newly oxidized blood leaves the heart's side through the aorta, the largest artery in the body. The blood flowing to the right side of the heart is coming back from all over the body before it reaches the lungs where it receives oxygen. 

The heart has three layers, namely:

Pericardium: This thin membrane is the outermost layer of the heart.

Cardiomyopathy: This thick layer is the contractile muscle that pumps and pushes blood through the body's tissues.

Endothelium: The innermost layer is thin and smooth.

The heart is divided into four chambers: two atrium and two ventricles. Blood is transported through the body through a complex network of veins and arteries.

The average human heart weighs from 0.17 to 0.31 kg. The muscles are strong enough to pump up to 7571 liters of blood flowing through the body each day.

The average heart beats 60 to 90 times per minute, but this depends on activity level and heart health. The healthier the people, the lower the resting heart rate will be.

Hormones are released because emotions and other stimuli affect heart rate, which is why the heart is involved in stimulation with emotion.