Under normal circumstances, Wright's stained blood smear shows that mature red blood cells are biconcave, and a few are oval. The cells are similar in size, with a diameter of 6 ~ 9 microns and an average of 7.5 microns. Pale pink, with the center 1/3 as the biological light staining area; There is no abnormal structure in the cytoplasm.
Various etiologies act on different stages of the physiological process of red blood cells, which can cause corresponding pathological changes of red blood cells and lead to special morphological changes of red blood cells, including abnormal size, morphology, staining and content of red blood cells:
The abnormal size of (1) is what we call the increase or decrease of red blood cell volume.
(2) Morphological abnormalities, such as spherical red blood cells, oval red blood cells and sickle red blood cells.
(3) Abnormal staining reaction, including low pigment red blood cells and high pigment red blood cells.
(4) There are basophilic variegated erythrocytes and carboplatin ring erythrocytes.
Extended data:
Erythrocyte number
(1) Male: 3.8-6 million/mm3; Normal index: 4.0-5.5X 10/2 power/liter.
(2) Female: 3.8-5.5 million/mm3; Normal index: 3.5-5.0X 10/2 power/liter.
Most blood consists of red blood cells, which transport oxygen from the lungs to tissues and cells all over the body and bring out carbon dioxide.
When the number of red blood cells decreases, the carrying capacity of oxygen will decrease, which will lead to hypoxia and anemia; In severe cases, it will be life-threatening. But if it increases too much, the blood will thicken, it will not flow easily, and blood vessels will be blocked easily.
Red blood cells are very small, 1 cubic millimeter of blood contains 5 million red blood cells, and the number of red blood cells in the human body can reach 25 billion.
The number of red blood cells will change with the change of external conditions and age. The number of plateau residents and newborns can reach more than 6 million /mm3, and the number of red blood cells of people engaged in sports or regular exercise is also large.
Baidu encyclopedia-morphological examination of red blood cells
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