Blood | Heart → Aorta → Arteries → Arterioles → Capillaries → Venules → Veins → Vena cava → Heart → Pulmonary arteries → Lungs → Pulmonary vein Diagram of the human circulatory system. ...
Human blood smear: a - erythrocytes; b - neutrophil; c - eosinophil; d - lymphocyte. ...
The heart and lungs, from an older edition of Grays Anatomy. ...
The aorta (generally pronounced or ay-orta) is the largest artery in the human body, originating from the left ventricle of the heart and bringing oxygenated blood to all parts of the body in the systemic circulation. ...
Section of an artery For other uses, see Artery (disambiguation). ...
An arteriole is a blood vessel that extends and branches out from an artery and leads to capillaries. ...
This article or section does not adequately cite its references or sources. ...
A venule is a small blood vessel that allows deoxygenated blood to return from the capillary beds to the larger blood vessels called veins. ...
In the circulatory system, a vein is a blood vessel that carries blood toward the heart. ...
The heart and lungs, from an older edition of Grays Anatomy. ...
The pulmonary arteries carry blood from the heart to the lungs. ...
The human lungs are the human organs of respiration. ...
The pulmonary veins carry oxygen-rich blood from the lungs to the left atrium of the heart. ...