Blood Flashcards
Plasma
55% of blood, 90% water
Plasma ions
sodium, chloride, potassium, calcium, magnesium, bicarbonate, phosphate, sulfate
Serum
plasma without clotting factors, samples without additives
Formed elements
45% of blood, made of 99% of RBCs rest if WBCs and platelets
How many RBCs in a microliter of blood?
5 million
What is the life span of a RBC?
120 days
What are the products of RBCs?
iron, amino acids, bilirubin
How many WBCs in a microliter of blood?
5-10k
What is the lifespan of a WBC?
1 day-1 year
How many platelets in a microliter of blood?
200k
What is the life span of platelets?
9-12 days
Granulocytes
category of WBCs, neutrophils, eosinophils,basophils
Neutrophils
phagocytes, increase during bacterial infections
Polymorphonuclear (PMN) leukocytes
aka neutrophils
Segmented neutrophils (segs)
aka neutrophils
40-60% of WBCs
neutrophils
1-3% of WBCs
eosinophils
Eosinophils
phagocytes, eats parasites and antibody labeled foreign molecules, increase with allergies and skin/parasitic infections
less than 1% of WBCs
Basophils
Basophils
phagocytes, release histamines, produce heparin
Increase in basophils means what?
leukemia
Mononuclear lymphocytes
category of WBCs, lymphocytes, monocytes
20-40% of WBCs
Lymphocytes
Lymphocytes
B cells, natural killer cells, T cells
B cells
produce antibodies
Natural killer cells
destroys foreign and infected cells
T cells
controls cellular immunity
3-8% of WBCs
monocytes
Monocytes
large phagocytes, signals help activate B cells to make antibodies
Megakaryocytes
creates platelets in bone marrow, packages and releases them into the bloodstream
How much blood is in the human body?
5-6 liters
How much blood is taken during donations?
500 mL
