Blood

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E- Structure of RBCs:- • They are non nucleated cells (now called corpuscles). • They have no organoids but filled with HB. • They are surrounded by cell membrane, which is plastic and has selective permeability. • They contain important enzymes e.g. carbonic anhydrase enzyme. • Adaptation of RBCs to its function:- • Its biconcave shape increases surface area for more gas exchange. • Absence of nuclei and cell organoids allows more space to HB for gas exchange. • Carbonic anhydrase enzyme plays an important role in transportation of CO2 from tissues to the lung. • Selective permeability of the cell membrane allows easy exchange of oxygen and CO2 but not HB. • Plastic cell membrane allows RBCs to be squeezed in narrow vessels, then regain its normal shape in wide vessels thus prevent their rupture. Dr. Amal M. Moustafa, , Department of Histology & Cytology
LEUCOCYTES (WBCS) • - :Definition • They are true nucleated cells having cell organoids, cell inclusions, but no hemoglobin. • :Colour • Single WBC is colourless (leucocyte) but when aggregated, they appear white (WBCs). • :Number. 4000-11000/mm 3 Dr. Amal M. Moustafa, , Department of Histology & Cytology
Page 1 and 2: Dr. Amal M. Moustafa, , Department
Page 3 and 4: The Blood Dr. Amal M. Moustafa, , D
Page 5 and 6: The Blood Cells Dr. Amal M. Moustaf
Page 7: C- Colour:- • Fresh, single RBC i
Page 11 and 12: Neutrophils (leucocytes polymorphon
Page 13 and 14: Function:- • Defense against micr
Page 15 and 16: Function:- 1-In allergic conditions
Page 17 and 18: Lymphocytes Non granular leucocytes
Page 19 and 20: Small Lymphocytes • Percentage: 1
Page 21 and 22: T. Lymphocytes • Development: •
Page 23 and 24: Classification of lymphocytes Devel
Page 25 and 26: PLATELETS (THROMBOCYTES) Dr. Amal M
Page 27 and 28: E/M: 1-Cell membrane:- Irregular an
Page 29 and 30: Number RBCs Neutrophils Anaemia or
Page 31 and 32: • Neutropenia: • It is a decrea
Page 35 and 36: PLATELETS RBCs Dr. Amal M. Moustafa
Page 41: Dr. Amal M. Moustafa, , Department

Blood

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