How the heart began to beat.

by Alexa Lovely Fitness trainer Ejection:
During this phase, the pressure in the ventricles becomes so high that the semi lunar valves open and blood flow in the pulmonary artery and aorta.
Kyle leon customized fat loss
Is volume relaxation phase: the ventricular wall weakens, the pressure drops again and closes the semi lunar valves
Filling phase of the heart chambers:

The pressure in the ventricles has become so low that the AV valves are open. From the atria, the chambers are filled in three stages. The rapid filling phase; They contain 60-70% of the total charge instead. Diastases is the slow filling and finally the atria contraction, the atria contract and fill the ventricles with the last 15-20%.
Sources:

How the heart began to beat.
For the 17th century people did not know better, or the human body had no blood circulation. The doctors of the ancient Greeks and Romans, but also the medical students at the European universities in the middle Ages, it was learned that anything that moves in the human body, including life itself, was powered by three spirits.
The veins carried the nature spirit, the spirit of life, the arteries and nerves of the animal spirit from the brains.

As long as these old ideas continued to exist understanding of life, was impossible. From a medical or scientific standpoint, There was alone and spiritual perspective.
As a result, more than a thousand years, only limited progress has been made in understanding the basic functions of the human body, and millions of people died as a result of medical ignorance.

Sponsor Ads

• Ad Space Available - Rent it Now!

Created on Dec 31st 1969 18:00. Viewed 0 times.

Comments