Book 3
15
Moreover, of the two vessels connected with it, that which brings pneuma into it from the lungsHe means the left auricle, considered as the termination of the pulmonary arteries; cf. p. 314, note 3. is much smaller than the great outgrowing arteryThe aorta, its orifice being circular, appears bigger than the slit-like mitral orifice. from which the arteries all over the body originate; this would suggest that it not merely gets pneuma from the lungs, but that it also gets blood from the right ventricle through the anastomoses mentioned.
