Analysis And Description Of Hematologic System

1780 words - 7 pages

The Hematologic System is regarded as the body’s system that regulates the movement of nutrients, molecules (macro and micro molecules), and oxygen to tissues and metabolic waste products and carbon dioxide out of the tissues (Colbert, 2009). The overall role of the hematologic system is to deliver substances needed for cellular metabolism, temperature regulation, defend the body from injury and microbial infections, and maintain the homeostatic balance or acid-base chemistry of the blood and fluid-electrolyte balance. The Hematologic System is principally made up of the blood, blood vessels, and primary organs that manufacture blood cells such as the bone marrow, spleen, lymph nodes, liver, and thymus gland (Ignatavicius & Workman, 2009). Blood is made up of three distinct components: red blood cells, white blood cells, and plasma, and its role is to transport necessary substances for metabolism (nutrients, hormones and oxygen) to cells and to remove metabolic waste products and carbon dioxide, regulation of body temperature and fluid balance, and protect the body from infections. Blood vessels simply aid the transportation of blood throughout the body, simply in and out of the heart. Spleen on its part is the largest lymphatic organ and functions as the blood filtration system and reservoir, site for fetal hematopoiesis, and mounts immune responses that act against invading infections. Bone marrow is another important component of the hematologic system, and its role is to synthesize new blood cells (Red blood cells white blood cells, and platelets) that constitute a healthy blood count while the liver functions by detoxifying the blood (Colbert, 2009).
Folic Acid Deficiency is a metabolic disorder characterized by lack of enough folic acid in the body. Folic acid or folate is important in the body for aiding DNA synthesis and repair and for producing red blood cells, and its absence in the diet results folic acid deficiency (Ignatavicius & Workman, 2009). This deficiency is mainly caused by eating foods with minimal or no folic acid or folate, pregnancy that causes the reserves of folate to go down, metabolic diseases and some blood disorders that cause high turnover of RBCs such as sickle cell disease. This is also caused by some medications that interfere with folic acid absorption in the gut such as sulfasalazine and methotrexate, and medications used for seizures and cancer, and excessive alcohol intake that interferes with folic acid absorption in the gut. Folic acid deficiency can result to severe health complications that include megaloblastic anemia, reduced white blood cells (WBCs) and platelets count, and severe birth defects affecting the brain and the spinal cord such as spina bifida (Colbert, 2009).
Aplastic anemia is a rare and chronic blood disorder or condition that occurs when the body stops producing enough new blood cells, thus leaving the body fatigued and at a higher risks of microbial infections and excessive...

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