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Questions and Answers
Which of the following is true about serum and plasma?
Which of the following is true about serum and plasma?
- Serum and plasma are interchangeable terms for the liquid portion of the blood.
- Serum is the liquid that remains when clotting is prevented with the addition of an anticoagulant, while plasma is the liquid that remains after the blood has clotted.
- Serum and plasma are both formed elements of blood.
- Serum is the liquid that remains after the blood has clotted, while plasma is the liquid that remains when clotting is prevented with the addition of an anticoagulant. (correct)
What are the cellular elements of blood known as?
What are the cellular elements of blood known as?
- Eosinophilic cells
- Plasma cells
- Non-nucleated cells
- Formed elements (correct)
What is the function of mature erythrocytes?
What is the function of mature erythrocytes?
- Assist in blood clotting
- Engage in the transport of oxygen and carbon dioxide (correct)
- Act as phagocytes to engulf pathogens
- Produce antibodies to fight infections
What is the buffy coat layer in centrifuged whole blood made up of?
What is the buffy coat layer in centrifuged whole blood made up of?
What is the characteristic shape of mature erythrocytes?
What is the characteristic shape of mature erythrocytes?
Flashcards
Serum vs. Plasma
Serum vs. Plasma
Serum is blood with clotting factors removed; plasma is blood with clotting prevented.
Formed Elements
Formed Elements
The cellular components of blood.
Erythrocytes Function
Erythrocytes Function
Carry oxygen and carbon dioxide.
Buffy Coat Composition
Buffy Coat Composition
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Erythrocyte Shape
Erythrocyte Shape
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Study Notes
Serum vs Plasma
- Serum is the liquid portion of blood obtained after coagulation, while plasma includes clotting factors and is obtained before coagulation.
- Plasma constitutes approximately 55% of total blood volume, whereas serum is what remains after the blood has clotted.
Cellular Elements of Blood
- The cellular elements of blood are known as formed elements, which include erythrocytes (red blood cells), leukocytes (white blood cells), and thrombocytes (platelets).
Function of Mature Erythrocytes
- Mature erythrocytes are primarily responsible for the transport of oxygen from the lungs to body tissues and the return transport of carbon dioxide from tissues to the lungs.
- They contain hemoglobin, a protein that binds to oxygen, facilitating this gas exchange.
Buffy Coat Layer
- The buffy coat layer in centrifuged whole blood consists of leukocytes (white blood cells) and thrombocytes (platelets).
- This layer sits between the plasma and the red blood cell layer and accounts for less than 1% of total blood volume.
Shape of Mature Erythrocytes
- Mature erythrocytes have a distinctive biconcave disc shape, allowing for increased surface area for enhanced gas exchange.
- This flexible shape enables them to navigate through narrow capillaries efficiently.
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