1 A high proportion of production costs is cash costs. 2  The only two costs in Table 1 that clearly are not cash costs are machinery depreciation ($60 per acre) and building depreciation ($7). 3  For cash rent farmland, only 9% of costs are non-cash ($67 depreciation / $872 total costs).
The right atrium receives oxygen-depleted blood from the body through a large vein called the vena cava, then pumps it to the right ventricle below. The right ventricle receives blood from the right atrium and pumps it through the pulmonary artery to the lungs to get oxygen. The left atrium receives oxygen-rich blood from the lungs through the pulmonary veins, then pumps it to the left ventricle below. The left ventricle receives blood from the left atrium, then pumps it out through a large artery called the aorta. The aorta branches off into other, smaller arteries that carry the oxygen-rich blood to the rest of the body.
Chambers of the Heart. The heart has four chambers: two atria and two ventricles. 1  The right atrium receives oxygen-poor blood from the body and pumps it to the right ventricle. 2  The right ventricle pumps the oxygen-poor blood to the lungs.