Cardiovascular system: Cardiovascular system is made up of heart, arteries, capillaries, and veins. The heart is a muscular organ and it is almost the size of our fist. It is between the sternum and lungs with the thoracic cavity. Coronary arteries are special arteries that carry blood to the heart muscles.
The main work of the heart is to pump blood into all body parts. The left end receives oxygenated blood from the lungs and is pushed into the body through the arteries. The right end receives blood through the vessel, which by transmitting it throughout the body, pushes the impure blood into the lungs for further purification.
Respiratory system: The respiratory system is made up of four elements.
1. Respiratory Tract
2. Neuromuscular system
4. Arteries, capillaries, and veins
The alveoli are surrounded by capillaries, sending nerve signals to the brain, thorax, and diaphragm, through which we breathe. At each breath, air goes through the airways into the alveoli, which are in the lungs. Where oxygen and carbon dioxide exchange. The blood circulation system in combination with the respiratory system supplies the oxygen needed for life and releases carbon dioxide from the body.
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