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15 Cards in this Set
- Front
- Back
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What are the three functions of the circulatory system?
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Transportation of nutrients and gases
Regulation of temperature and hormones Protection though the immune system and blood clotting |
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How many liters of blood does the average male have? A female?
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Males: 5-6 liters
Females: 4-5 liters |
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What is blood?
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A specialized connective tissue which contains cellular and liquid components.
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What percentage of the blood is composed of formed elements (blood cells)?
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45%.
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What percentage of the blood is composed of fluids (plasma)?
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55%.
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What makes up blood plasma? (8)
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90% water, ions, nutrients, hormones, enzymes, antibodies, waste, and proteins.
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What are the three main plasma proteins? What are their functions?
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Albumin: provides osmotic pressure to draw water into capillaries
Globulin: transports lipids and fat soluble vitamins; has a role in immunity Fibrinogen: an important clotting factor |
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Where are erythrocytes produced?
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The bone marrow.
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What are the two types of white blood cells (leukocytes)?
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Agranular: lymphocytes, monocytes
Granular: neurotrophils, eosinophils, basophils |
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What is the function of lymphocytes?
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To fight infectious organisms and act as an antigen to produce an immune reaction.
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What are the two main classes of lymphocytes? What are their functions?
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T cells: attack foreign bodies directly
B cells: multiply to become plasma cells and secrete antibodies |
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What is the function of the antibody histamine?
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It is a vasodilalator, produces inflammation, and can constrict smooth muscles in bronchi
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What is the function of a neurophil?
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To phagocytize bacteria.
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What is the function of a eosinophil?
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To turn off allergic responses and kill parasites.
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What is the function of a basophil?
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To release histamine and other mediators of inflammation.
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