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Questions and Answers
What is the approximate volume of blood in the average adult?
Which component of blood is responsible for clotting within 30 to 60 minutes when blood leaks from the body?
What creates a whole blood specimen when added to blood removed from the circulation via phlebotomy?
What is the yellow liquid portion of clotted blood called?
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Which layer of a whole blood specimen contains the erythrocytes or red blood cells (RBCs) after centrifugation?
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Which component of blood comprises approximately 55% of the total volume?
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What is the major difference between plasma and serum?
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What is the function of plasma in the body?
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Where do the blood cells, including erythrocytes, leukocytes, and platelets, originate?
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What are the three types of cells that make up the blood-forming population of bone marrow?
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Study Notes
Blood Composition and Properties
- The average adult has an approximate blood volume of 5 liters.
- Clotting in the body occurs within 30 to 60 minutes and is facilitated by platelets.
Blood Collection and Composition
- The addition of an anticoagulant to blood removed from the circulation via phlebotomy creates a whole blood specimen.
- The yellow liquid portion of clotted blood is called serum.
Blood Layers and Cells
- After centrifugation, the layer containing erythrocytes (red blood cells, RBCs) in a whole blood specimen is the bottom layer.
- Plasma comprises approximately 55% of the total blood volume.
Plasma and Serum
- The major difference between plasma and serum is the presence of clotting factors in plasma, which are absent in serum.
- Plasma functions in the body to transport proteins, nutrients, hormones, gases, and waste products.
Blood Cell Origin and Formation
- Blood cells, including erythrocytes, leukocytes, and platelets, originate in the bone marrow.
- The three types of cells that make up the blood-forming population of bone marrow are myeloid stem cells, lymphoid stem cells, and megakaryocyte precursor cells.
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Description
Test your knowledge about the biochemistry of blood with this quiz, covering topics such as blood composition, functions, and characteristics. Explore the specialized connective tissue that is blood and its components including red blood cells, white blood cells, and plasma.
