Table of Contents
Circulatory system
Pulmonary circulation – The circulatory system includes the heart, veins, and arteries that carry blood throughout the body.
Before a person to stay alive, their blood must constantly circulate. It transmits oxygen from the air we breathe and supplies it to the cells scattered throughout our bodies. The pumping done by the heart causes blood to flow through the arteries, capillaries and veins. A set of blood vessels circulates blood through the lungs to exchange gas. The other vessels supply the rest of the body.
1. There are two types of passage: pulmonary circulation and universal circulation
The pulmonary circulation carries blood among the heart and the lungs. It carries oxygen-depleted blood to the lungs to take in oxygen and get rid of carbon dioxide. The oxygenated blood then revenues to the heart. Systemic circulation carries blood among the heart and the rest of the body. It has oxygenated blood to the cells and redirects oxygen-depleted lifeblood to the hearts.
2. The heart controls both types of passage – Pulmonary circulation
The heart drives oxygenated blood out of the left ventricle and then into the aorta to initiate systemic circulation. Once the blood has supplied the cells throughout the body with oxygen and nutrients, it is rerouted, deprived of oxygen, towards the heart’s right atrium. Next, Oxygen-deprived blood flows from the right hall to the right ventricle. The heart then drives it out of the right ventricle towards the pulmonary arteries: the start of pulmonary circulation. Next, the blood travels to the lungs, exchanges its carbon dioxide for oxygen, and goes to the left atrium. Finally, oxygenated blood flows from the left atrium to the left ventricle below: this is again the starting point for systemic circulation.
3. The circulatory system works in cycle with the breathing systems
The circulatory and respiratory system work together to supply oxygen to the body and remove carbon dioxide. Pulmonic circulation facilitates the process of external respiration: oxygen-deprived blood flows into the lungs. It absorbs oxygen from tiny pockets of air (the alveoli) and releases carbon dioxide. Systemic circulation facilitates the process of internal respiration: oxygen-rich blood is transported through capillaries supplying the rest of the body. In addition, blood brings oxygen to cells and absorbs carbon dioxide.
4. The pulmonary circuit only transports blood between the heart and the lungs
Because of this pulmonary circuit, oxygen-deprived blood leaves the heart’s right ventricle and passes into the pulmonary trunk. The pulmonary trunk gulfs into the right and left pulmonary arteries. These arteries carry deoxygenated blood to the arterioles and capillary beds of the lungs. So here, carbon dioxide is released, and oxygen is absorbed. The oxygenated blood passes from the capillary beds to the pulmonary veins through the venules. Finally, the pulmonary veins carry it to the heart’s left atrium. The pulmonary veins are the only arteries to bring deoxygenated blood, and the pulmonary veins are the superior veins to carry oxygen-rich blood.
5. The systemic circuit feeds the whole body
Before in the systemic circuit, oxygenated blood from the heart’s left ventricle to the aorta, the largest artery in the body. Next, the blood goes to the aorta to join the systemic arteries, then the arterioles and the capillary beds supply the bodily matters. Here, oxygen and nutrients are unconfined, and carbon dioxide and other wastes are absorbed. The deoxygenated blood then passes from the capillary beds to the systemic veins through the venules. The systemic veins drain into the inferior and superior vena cava, the most prominent veins in the body. Finally, the vena cava carries deoxygenated blood to the heart’s right atrium.
