M4. Hematology section_RBC, WBCs, PLT

Question 1

• anucleate (no nucleus) biconcave discs.
• 7.2 microns in diameter.
• have the protein Hgb.
• main transporters of oxygen and CO2.
• life span: 120 days.

Answer 1

Erythrocytes/RBCs

Question 2

• provide immunity by producing Ab(s)
• destroys harmful pathogens by phagocytosis
• 4, 500 - 11, 000 /mL of blood

Answer 2

Leukocytes/WBCs

Question 3

Leukocytes/WBCs

• most numerous leukocytes (40%-60%)
• phagocytosis - protection against infection.
• “segmented” or “polymorphonuclear cells”
• natural immunity
• Normal WBC in peripheral blood
• 3-5 nucleus segments
• increases in bacterial infections

Answer 3

Neutrophils

Question 4

Leukocytes/WBCs

• second most numerous leukocytes (20-40%)
• immune capability by means of B and T lymphocytes
• large whole & round purple nucleus - sky blue cytoplasm
• increases in viral infections

• produces Ab(s)
• in humoral activity
• *active search & destroy of Ag(s)

Answer 4

Lymphocytes

• B-cells
• *T-cells

Question 5

Leukocytes/WBCs

• 3rd most nemerous (3-8%)
• largest circulating leukocyte
• Act as a powerful phagocytes to digest foreign material
• large, irregular nucleus - blue-gray cytoplasm w/ vacuoles
• increases in intracellular infections and tuberculosis

tissue monocytes is called…

Answer 5

Monocyte

Macrophage

Question 6

Leukocytes/WBCs

• 4th most numerous (1-3%)
• bilobed nucleus - red-orange granules
• detoxify foreign protein.
• increase in allergies, skin infections, and parasitic infections

Answer 6

Eosinophils

Question 7

Leukocytes/WBCs

• 5th most numerous (0-1%)
• least common numerous
• large purple-blue cytoplasm granules
• release histamine in the inflammation process
• release heparin to prevent abnormal blood clotting

Answer 7

Basophils

Question 8

• small, irregularly shaped disks
• formed from megakaryocytes
• Life span: 9-12 days
• 140,000 & 440,000 mL/blood
• vital role in blood clotting in all stages of coagulation mechanism.

Answer 8

Thrombocytes/PLTs