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人的血液是由血浆、红血球、白血球和血小板构成。所谓的贫血是指血液里的红血球及其中的血色素减少。造成贫血的原因有:①身体受伤,有溃疡病、钩虫病、痔疮以及月经过多而经常失血、或得了疟疾,使红血球破坏过多;②造血原料不足。制造红血球的原料如铁、维生素、蛋白质等不足,或因胃肠疾病不能吸收;③骨髓的造血功能由于疾病、毒物及放
Human blood is composed of plasma, red blood cells, white blood cells and platelets. The so-called anemia refers to the red blood cells in the blood and hemoglobin reduction. The causes of anemia are: ① body injuries, ulcer disease, hookworm disease, hemorrhoids and menorrhagia often have blood loss, or have malaria, so that excessive destruction of red blood cells; ② lack of raw materials. The raw materials for the manufacture of red blood cells such as iron, vitamins, proteins and other deficiencies, or due to gastrointestinal diseases can not be absorbed; ③ bone marrow hematopoietic function due to disease, poison and release