Blood Flashcards
(38 cards)
what kind of tissue is Blood
Connective Tissue
What makes Blood
Plasma(watery portion) and Formed elements( Erythrocytes; leukocytes and thrombocytes)
Most of blood is?
plasma
Functions of Blood
1) Transportation ( hormones and O2) 2)Regulation (temperature) 3) Protection(immune; clotting)
What makes of Plasma
1) Water; proteins; ions (albumins- most common protein)
Serum
Plasma w/out proteins
RBC
Erythrocytes
Erythrocytes Char
1) Lack a nucleus 2) Biconcave disc 3) Transports O2 and CO2 4) Contains Hemoglobin(280 per cell)
Hematocrit
45% normal % of formed elements in blood
Bright red vs dark red Blood
Bright red blood is carrying O2
Hemoglobin
1) 4 Protein chains(globins) 2) 4 Heme units(contains iron) 3) Iron binds to O2
Erythrocytes life cycle
120 day or 4 months
What phagocytizes blood?
Liver and Spleen - components are recycled to make new RBC
Where is RBC made
Red bone marrow at the end of long bones
Leukocytes Char
Have nucleus; no Hemoglobin(Hgb)
2 Main Classes of Leukocytes
Granulocytes(have visible granules in cytoplasm) and Agranulocyte(no visible granules)
Granulocytes(3)
1)Neutrophils (60-70%) 2) Eosinophils (2-4%) 3)Basophils (<1%)
Neutrophils
Multi lobed nucleus - respond to infection (phagocytize bacteria)
Eosinophils(2-4%)
1) Reddish-oranges granules 2) bilobed nucleus 3) Increase during allergic response 4) Combat parasites
Basophils (<1%)
1) Large purple cytoplasmic granules 2) Increase during allergic response and inflammation 3)Secrete histamine (vasodilator) & heparin (inhibits clotting)
Agranulocyte
1) Monocytes 3-8% 2) Lymphocytes (20-25%)
Monocytes (3-8%)
1) Largest leukocytes 2) C-shaped nucleus 3) Transform into macrophages and phagocytize
Lymphocytes (20-25%)
Smallest leukocyte Round nucleus that takes up most of cytoplasm; 3 types
Lymphocytes (20-25%) 3 types
1) T-lymphocytes (Attack foreign & virus infected cells) 2) B-lymphocytes (Become plasma cells secrete Antibodies) 3) Natural killer cells(Attack abnormal & infected tissue)
