Blood vessels. These bring blood to the lungs, where oxygen enters the bloodstream, and then to the body: The inferior and superior vena cava bring oxygen-poor blood from the body into the right atrium.The pulmonary artery channels oxygen-poor blood from the right ventricle into the lungs, where oxygen enters the bloodstream.The pulmonary veins bring oxygen-rich blood to the left atrium. The aorta channels oxygen-rich blood to the body.hese bring blood to the lungs, where oxygen enters the bloodstream, and then to the body: The inferior and superior vena cava bring oxygen-poor blood from the body into the right atrium. The pulmonary artery channels oxygen-poor blood from the right ventricle into the lungs, where oxygen enters the bloodstream.
Empiricism is a philosophical belief that states your knowledge of the world is based on your experiences, particularly your sensory experiences. According to empiricists, our learning is based on our observations and perception; knowledge is not possible without experience.
1. (Philosophy) a strong form of empiricism, esp as established in the philosophical system of Auguste Comte, that rejects metaphysics and theology as seeking knowledge beyond the scope of experience, and holds that experimental investigation and observation are the only sources of substantial knowledge.