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.
Secretary of State John Quincy Adams, author of the Monroe Doctrine. The Monroe Doctrine was a United States policy of opposing European colonialism in The Americas beginning in 1823. It stated that further efforts by European nations to take control of any independent state in North or South America would be viewed as the manifestation of an unfriendly disposition toward the United States..