From the tissue capillaries, the deoxygenated blood returns through a system of veins to the right atrium of the heart. The coronary arteries are the only vessels that branch from the ascending aorta. The brachiocephalic, left common carotid, and left subclavian arteries branch from the aortic arch. Blood supply for the brain is provided by the internal carotid and vertebral arteries. The subclavian arteries provide the blood supply for the upper extremity. The celiac, superior mesenteric, suprarenal, renal, gonadal, and inferior mesenteric arteries branch from the abdominal aorta to supply the abdominal viscera.
Lumbar arteries provide blood for the muscles and spinal cord. Branches of the external iliac artery provide the blood supply for the lower extremity. The internal iliac artery supplies the pelvic viscera. How does Charle's law relate to breathing? What is the ideal gas law constant?
How do you calculate the ideal gas law constant? How do you find density in the ideal gas law? Does ideal gas law apply to liquids? Impact of this question views around the world. You can reuse this answer Creative Commons License. In mammals, the circulation occurs in two circuits, and blood is circulated through the heart for two times.
This type of circulation is called the double circulation. Pulmonary and systematic circulation are the two types of circulations that occur in a double circulation system. The difference between pulmonary and systemic circulation stems from the nature of the blood and the destination of the blood.
The main difference between pulmonary and systematic circulation is that pulmonary circulation carries deoxygenated blood from heart to lungs and oxygenated blood back to the heart whereas systemic circulation carries oxygenated blood from the heart throughout the body and deoxygenated blood back to the heart.
Pulmonary circulation is the circulation system that carries deoxygenated blood to the lungs and returns oxygenated blood from the lungs back to the heart. The two blood vessels involved in the pulmonary circulation are pulmonary artery and the pulmonary vein. The deoxygenated blood flows into the right ventricle from the right atrium.
This blood is carried to the alveoli of lungs for the oxygenation by the pulmonary artery. The pulmonary artery, which immediately originates from the right ventricle, is called the pulmonary trunk. The pulmonary trunk divides into two; the left pulmonary artery and the right pulmonary artery. The left pulmonary artery carries blood to the left lung while the right pulmonary artery carries blood to the right lung.
Figure 1: Pulmonary Circulation. Carbon dioxide is removed from the blood while oxygen is taken into the blood at the alveolar capillaries. The oxygenated blood is carried to the left atrium of the heart by four pulmonary veins. A small amount of oxygenated blood is carried to the heart by the bronchial veins.
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