The Left Ventricle Is The Largest Chamber Of The Heart. How Is Its Size Related To Its Function?

About the Heart and Blood Vessels

The heart is the hardest working muscle in the human being body. Located almost in the eye of the chest, a healthy developed heart is the size of a clenched adult fist. By age 70, the human center volition beat more than than 2.five billion times. The centre is e'er working. It pumps well-nigh two,000 gallons of blood daily.

A child's heart works merely equally hard equally an adult'due south heart. In fact, at residuum, a baby's heart may beat up to 130 to 150 times a infinitesimal. An adult's heart often beats betwixt threescore and 100 times a infinitesimal. The rate at which the heart pumps gradually slows down from birth to teen years.

The cardiovascular system is made up of the heart and blood vessels. It circulates claret throughout the trunk. A healthy cardiovascular organisation is vital to supplying the body with oxygen and nutrients.

How the heart works

The eye is a large, muscular organ that pumps blood filled with oxygen and nutrients through the claret vessels to the body tissues. It'due south made up of:

iv chambers. The 2 upper chambers are the atria. They receive and collect claret. The 2 lower chambers are the ventricles. They pump blood to other parts of your body. Here is the process:
- The correct atrium receives claret from the body. This blood is low in oxygen. This is the blood from the veins.
- The correct ventricle pumps the blood from the right atrium into the lungs to pick up oxygen and remove carbon dioxide.
- The left atrium receives claret from the lungs. This blood is rich in oxygen.
- The left ventricle pumps the blood from the left atrium out to the body, supplying all organs with oxygen-rich blood.
four valves. The 4 valves are the aortic, pulmonary, mitral, and tricuspid valves. They allow claret menstruum forward and prevent the backward menstruum.
Claret vessels.These bring blood to the lungs, where oxygen enters the bloodstream, and so to the body:
- The junior and superior vena cava bring oxygen-poor blood from the body into the right atrium.
- The pulmonary artery channels oxygen-poor claret from the right ventricle into the lungs, where oxygen enters the bloodstream.
- The pulmonary veins bring oxygen-rich claret to the left atrium.
- The aorta channels oxygen-rich blood to the body from the left ventricle.
An electrical system that stimulates contraction of the heart musculus.

A network of arteries and veins likewise carry claret throughout the body:

Arteries transport blood from the heart to the body tissues.
Veins carry blood back to the eye.