This diagram is a summary of the human circulatory system.
A. Capillaries - where oxygen leaves blood cells and goes to body cells, and carbon dioxide leaves body cells and joins bloods cells
B. Aorta - largest artery (takes blood away from heart) in the body
C. Left Pulmonary Artery - delivers deoxygenated blood (lacking oxygen, has lots of carbon dioxide though) to the left lung
D. Capillaries in left lung/alveoli - oxygen enters bloodstream from the left lung, carbon dioxide leaves blood and enters lungs
E. Left Pulmonary Vein - brings newly-oxygenated blood from the left lung lung back to the heart
F. Left Atrium of Heart
G. ***Can't tell exactly what it's pointing to*** Either the Left Ventricle or Mitral Valve (in between left atrium and left ventricle)
H. ***Can't tell exactly what it's pointing to*** Maybe the Descending Aorta (branch of aorta goes downwards to deliver blood to body cells)
I. Capillaries - where oxygen leaves blood cells and goes to body cells, and carbon dioxide leaves body cells and joins bloods cells
J. Inferior Vena Cava - large vein that brings deoxygenated blood back to the heart from below the heart
K. Right Ventricle
L. Right Atrium
M. Right Pulmonary Vein -brings newly-oxygenated blood from the right lung lung back to the heart
N. Capillaries in right lung/alveoli - oxygen enters bloodstream from the right lung, carbon dioxide leaves blood and enters lungs
O. Right Pulmonary Artery - delivers deoxygenated blood (lacking oxygen, has lots of carbon dioxide though) to the right lung
P. Superior Vena Cava - large vein that brings deoxygenated blood back to the heart from above the heart