Double Circulation Through the Heart

Also called

double circulation · circulation of blood · blood circulation · human heart · heart · four chambers of heart · chambers of the heart · pulmonary circulation · systemic circulation · heart valves · tricuspid valve · mitral valve · bicuspid valve · aortic valve · pulmonary valve · pulmonary artery · pulmonary vein · aorta · vena cava · atrium · ventricle · septum · arteries and veins · oxygenated and deoxygenated blood · transportation in human beings · life processes · circulatory system · path of blood through the heart

Topics

• Blood passes through the heart twice in one complete circuit…
• Route: body veins -> venae cavae -> right atrium -> tricuspid valve -> right ventricle -> pulmonary valve -> pulmonary…
• Blood picks up oxygen in the lung capillaries and gives oxygen to the cells in the body capillaries
• Arteries carry blood away from the heart and veins carry blood toward it; the names say nothing about oxygen
• The pulmonary artery carries low-oxygen blood and the pulmonary veins carry high-oxygen blood
• The septum keeps the right (low-oxygen) and left (high-oxygen) sides apart, so the two kinds of blood never mix
• Valves let blood flow one way only; they stop it flowing backward when the chambers squeeze
• The two atria squeeze together and then the two ventricles squeeze together…
• The left ventricle has the thickest wall because it pumps blood all round the body

About this model

A GLB file of about 1956 KB, shown in Lably's 3D viewer and, on a phone, placed in your room with AR. Credit: Real heart (outside view) and lungs: HuBMAP Human Reference Atlas, CCF 3D Reference Object Library (Kristen Browne et al., NIH/NIAID; derived from the NLM Visible Human Project), CC BY 4.0, simplified. Cut-open heart, valves, vessels, capillary beds, markers and all motion: made for Lably. | CC BY 4.0 (contains HuBMAP Human Reference Atlas heart and lung meshes, CC BY 4.0). Authored parts by Lably.

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