Lec 28 Blood Flashcards
what is the composition of blood?
55% plasma, 45% cellular elements
what is plasma composed of?
- 90 percent water
- plasma proteins - albumin, fibrinogen, globulins
- ions
- compounds such as glucose, urea etc
which component of plasma affects osmotic pressure?
albumin
which component of plasma is necessary for blood clotting?
fibrinogen
what are the cellular elements of blood?
- erythrocytes (RBC)
- leukocytes [WBC]
- thrombocytes [platelets] - clotting
which cell is biconcave, has no nucleus, and stains reddish pink?
erythrocytes
which cell cannot undergo mitosis?
erythrocytes [no nucleus]
which cell is segmented, polymorphonucleated, and has granules.
neutrophil
which cell is a hemoglobin responsible for oxygen transport?
erythrocytes
what is the lifespan of an erythrocyte?
120 days
what is the lifespan of a neutrophil?
a few hrs
which cell undergoes phagocytosis, and aids in bacterial infections
neutrophil
which cell is bilobbed, with large pink granules?
eosinophil
true or false: an erythrocyte is a white blood cell
false
which wbc fights parasitic infections and allergies
eosinophil
which wbc is rare, has a lobed nucleus, and dark granules.
basophil
which wbc has the largest, wide shaped nucleus with a blue cytoplasm
monocyte
which wbc contains histamine, increases in leukemias, and affects vascular permeability?
basophil
which cell undergoes phagocytosis, and moves into the tissues and becomes a macrophage?
monocyte
which wbc participates in immune defense, are non-granulocytes, has a blue cytoplasm, a round nucleus?
lymphocytes
what are thrombocytes?
small granular fragments
aids in clotting
what are antigens?
a type of protein found on the surface of erythocytes
what is an antibody?
present in the plasma, attacks corresponding antigen
what would anti-A attack? what would it cause?
it will attack the A antigen causing a clumping of cells which have this antigen on their surface
