Aldosterone stimulates the cells of the kidney to increase their reabsorption of sodium and water to maintain blood volume and pressure. Hormones. The kidneys maintain a small but important endocrine function by producing the hormones calcitriol and erythropoietin. 1  Calcitriol is the active form of vitamin D in the body. 2  Erythropoietin (EPO) is a hormone produced by cells of the peritubular capillaries in response to hypoxia (a low level of oxygen in the blood).
The Roosevelt Corollary was an addition to the Monroe Doctrine which stated that no European countries were allowed to intervene with Latin American affairs. The only way that â¦ the U.S was allowed to become involved was if the affairs or European countries was threatened.
A section of the Monroe Doctrine. 1  The Monroe Doctrine was a policy that was codeveloped by John Quincy Adams and put into effect by President James Monroe on December 2,1823. The Doctrine stated that all nations (Europe in particular) were not able to colonize any further in the American Continents.