Question

what is important for a human heart?​

Answer 1

Answer:

The human heart is an organ that pumps blood throughout the body via the circulatory system, supplying oxygen and nutrients to the tissues and removing carbon dioxide and other wastes. ... "If [the heart] is not able to supply blood to the organs and tissues, they'll die."

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Answer 2

Human heart

Explanation:

• The heart is one of the most important muscular organs of the human body.
• Since both oxygen and carbon dioxide is carried by the blood; Therefore, to protect the oxygen-rich blood from mixing with the carbon dioxide-rich blood, the heart has different chambers.
• Oxygenated blood from the lungs enters the thin-walled upper chamber of the heart to the left, that is, the left atrium (see image above).
• When it is collecting blood, the left atrium relaxes; However, when the next chamber, the left ventricle, dilates, it (the left atrium) contracts to allow blood to move into it.
• In addition, when the muscular left ventricle contracts (in its turn), blood is pumped into the body. Similarly, deoxygenated blood flows from the body into the upper chamber on the right, the right atrium (as it dilates).
• When the right atrium contracts, the corresponding lower chamber, the right ventricle, dilates and this action moves blood to the right ventricle, which in turn pumps it to the lungs for oxygen.
• The muscular walls in the ventricles (compared to the atria) are thicker because the ventricles have to pump blood to the various organs.
• Some valves ensure that blood does not flow backward when the atria or ventricles contract.
• The separation of the right and left sides of the heart is beneficial, as it prevents the mixing of oxygenated and deoxygenated blood.
• In animals that do not use energy to maintain their body temperature, their body temperature depends on the temperature of the environment.
• The hearts of such animals (such as amphibians or many reptiles) are three-chambered and tolerate some mix of oxygenated and deoxygenated bloodstreams.
• On the other hand, the heart of fish has only two chambers; However, the blood is pumped to the gills and becomes oxygenated there, and then goes directly to the rest of the body.