How the heart works in the human body
In mammals, the function of the right side of the heart is to collect deoxygenated blood from the body into the right atrium and pump it through the right ventricle to the lungs (pulmonary circulation) so that Oxygen (gas currency) can be collected (gas exchange) by releasing carbon dioxide.
This happens through the passive process of diffusion. The left part (see Left heart) collects oxygenated blood from the lungs into the left atrium. Blood from the left atrium moves to the left ventricle, which pumps it into the body through the aorta.
On either side, the lower ventricles are thicker and stronger than the upper atriums. The muscular wall of the left ventricle is thicker than the wall of the right ventricle because more force is required to pump blood through the systemic circulation.
Starting in the right atrium, blood flows through the tricuspid valve into the right ventricle. Here it is pumped out through the pulmonary crescent valve and flows into the lungs through the pulmonary artery. From there, the blood returns to the left atrium via the pulmonary vein.
It goes to the left ventricle through the mitral valve, from where it is pumped into the aorta through the aortic crescent valve. The great artery branches off, and the blood divides into the main arteries, which supply blood to the upper and lower parts of the body. The blood flows from the arteries to the smaller arterioles and eventually to the capillaries that form each capillary.
Why does seawater taste salty?
Most of the salt in the sea has been carried there by rivers over the course of millions of years. When seawater evaporates, it rises into the air and becomes a cloud.
This cloud reaches the land areas and rains in the form of rain. While raining, it comes in contact with gases like carbon dioxide, sulfur dioxide, nitrogen oxide, etc., present in the air. These gases dissolve in water, making rainwater slightly acidic.
When this acidic water falls on rocks and the ground, it dissolves the salts present in them. When this water flows from the surface and reaches the rivers, this salinity also comes in the river's water, but due to very less salt content, we find the river water sweet.
This saline water of rivers reaches the seas. In this way, salt brought by rivers has been gradually collecting in the seas for millions of years. Rocks are also present at the bottom of the oceans, whose salts also dissolve in the seawater. Similarly, there are volcanoes under the oceans, which erupt from time to time, releasing lava and gases like chlorine, sulfur dioxide, etc.
There are also substances like sodium in the sea. With the reaction of chlorine etc., salts are formed. Food salt is a compound of sodium and chloride (NaCl), so salt is formed in the sea in this way too.
The salt present in the seawater remains in it, but due to the sun's heat, the water of the sea evaporates and comes out of the sea, condensed in the sky, and becomes a cloud. This vapor is pure water; that is, there is no salt content in it.
In this way, the seawater is continuously recycled, but the salt content just gets deposited in the sea. these processes
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