exercise 18 Flashcards
plasma
fluid portion of the blood; allows blood to flow; composed primarily of water, but also carries many chemicals including a variety of ions, dissolved gasses, proteins, and hormones; of the approximately 5.5 L of whole blood in a person, approximately 3 L are plasma
formed elements of the blood
erythrocytes, leukocytes, platelets; each began as a nucleated cell in the red bone marrow
leukocytes
WBC; 4,000-11,000 per microliter
Granulocytes
neutrophils, eosinophils, basophils
agranulocytes
monocytes, lymphocytes
monocytes
largest; oval, kidney shaped nucleus
lymphocytes
smallest; round, slightly indented nucleus that may nearly fill the cell
neutrophils
most common; multilobed/segmented nucleus
eosinophil
bilobed nucleus
basophils
least common and have so many granules that the round nucleus is often not visible
platelets
thrombocytes; membrane-bound fragments of cytoplasm that come from megakaryocytes; function in the plasma; 150,000-450,000 per microliter
erythrocytes
RBC; mature have no nucleus; biconcave; flexible and can be deformed; smaller than leukocytes but larger than platelets; 3.9-5.6 million per microliter
antigens
agglutinogens; found on cell membrane of erythrocytes; serve as markers or name tags
antibodies
agglutinins; produced by lymphocytes and added to the blood
minor agglutination
the antibodies in the donated blood react with the antigens on the erythrocytes in the recipient blood