Blood (made of 45% formed elements). Red Blood Cells (RBC's) Called Erythrocytes Small boconcave...
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Transcript of Blood (made of 45% formed elements). Red Blood Cells (RBC's) Called Erythrocytes Small boconcave...
![Page 1: Blood (made of 45% formed elements). Red Blood Cells (RBC's) Called Erythrocytes Small boconcave discs Loses nucleus when mature Each cell contains hemoglobin.](https://reader036.fdocuments.us/reader036/viewer/2022082610/56649f415503460f94c60b62/html5/thumbnails/1.jpg)
Blood(made of 45% formed elements)
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Red Blood Cells (RBC's)
Called Erythrocytes Small boconcave discs Loses nucleus when mature Each cell contains hemoglobin Heme (with iron, Fe) + globin Made in red bone marrow (skull, ribs,
vertebrae, end of long bones)
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RBC formation
![Page 4: Blood (made of 45% formed elements). Red Blood Cells (RBC's) Called Erythrocytes Small boconcave discs Loses nucleus when mature Each cell contains hemoglobin.](https://reader036.fdocuments.us/reader036/viewer/2022082610/56649f415503460f94c60b62/html5/thumbnails/4.jpg)
Hemoglobin in red blood cells responsible for carrying O
2
Hemoglobin increase O2 carrying capacity
60 times Red Blood Cells live approx 120 days Eventually destroyed by liver and spleen Hemoglobin also helps carry CO
2
![Page 5: Blood (made of 45% formed elements). Red Blood Cells (RBC's) Called Erythrocytes Small boconcave discs Loses nucleus when mature Each cell contains hemoglobin.](https://reader036.fdocuments.us/reader036/viewer/2022082610/56649f415503460f94c60b62/html5/thumbnails/5.jpg)
High altitudes or blood loss..
Renal erythropoeitinis released This raises the O
2 capacity of the blood
This also causes the blood to thicken Athletes will use this substance to enhance
performance It is illegal (due to the dangers of blood
thickening)
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White Blood Cells
Called Leukocytes 8 – 10 times larger than the RBC's Contain a nucleus (irregularily shaped) Exist in far fewer numbers than RBC's Most are neutrophils (immune cells that
engulf invaders) Leukemia: a form of cancer characterized
by uncontrolled production of leukocytes
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Granulocytes WBC's with granules in cytoplasm Have irregular shaped (many lobed)
nucleus called polymorphonuclear Formed in red bone marrow 3 kinds:
Neutrophils Eosinophils Basophils
Destro bacteria, viruses, dead tissue by engulfing (phagocytes)
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Agranulocytes
WBC's with no granules in cytoplasm Have a circular nucleus 2 kinds:
Monocytes (huge, phagocytotic) Lymphocytes (20 – 30% WBC's,
produced in lymphoid tissue, responsible for immunity, produce antibodies)
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Platelets Called thrombocytes Are actually fragments of huge cells Huge cells come from red bone marrow They are anucleate Blood stream has more than a trillion Responsible for blood clotting (combined
with certain plasma proteins) Haemophiliac: a person whose blood
doesn't clot
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