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Questions and Answers
Which of the following is NOT a primary function of blood?
Which of the following is NOT a primary function of blood?
- Buffering acid-base balance
- Transporting hormones to integrate organ systems
- Providing structural support to bones (correct)
- Destroying foreign organisms via phagocytosis
The percentage of leukocytes and platelets in total blood volume is significantly greater than the percentage of red blood cells.
The percentage of leukocytes and platelets in total blood volume is significantly greater than the percentage of red blood cells.
False (B)
What is the term for the percentage of total blood volume occupied by red blood cells?
What is the term for the percentage of total blood volume occupied by red blood cells?
hematocrit
The protein within red blood cells that enables them to carry oxygen and carbon dioxide is known as ______.
The protein within red blood cells that enables them to carry oxygen and carbon dioxide is known as ______.
Match the blood component with its respective percentage of the total average blood volume in a human:
Match the blood component with its respective percentage of the total average blood volume in a human:
What is the primary role of agglutinogens in blood typing?
What is the primary role of agglutinogens in blood typing?
Granulocytes are characterized by the absence of visible granules in their cytoplasm when observed under a microscope.
Granulocytes are characterized by the absence of visible granules in their cytoplasm when observed under a microscope.
In the context of blood transfusions, why is it essential to determine a person's blood type before the procedure?
In the context of blood transfusions, why is it essential to determine a person's blood type before the procedure?
Antibodies that react with RBCs bearing different antigens, causing them to clump together, are called ______.
Antibodies that react with RBCs bearing different antigens, causing them to clump together, are called ______.
If a 75 Kg adult male has a normal blood volume of approximately 8% of his body weight, what would be his estimated blood volume in liters?
If a 75 Kg adult male has a normal blood volume of approximately 8% of his body weight, what would be his estimated blood volume in liters?
What kind of leukocyte
What kind of leukocyte
What kind of leukocyte
What kind of leukocyte
What kind of leukocyte
What kind of leukocyte
What kind of leukocyte
What kind of leukocyte
What kind of leukocyte
What kind of leukocyte
Flashcards
Plasma
Plasma
Liquid portion of blood, constituting about 54% of total blood volume.
Erythrocytes (RBCs)
Erythrocytes (RBCs)
Red blood cells; make up about 45% of total blood volume (hematocrit).
Hematocrit
Hematocrit
Percentage of total blood volume occupied by red blood cells.
Hemoglobin
Hemoglobin
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Leukocytes
Leukocytes
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Granulocytes
Granulocytes
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Agglutinogens
Agglutinogens
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Agglutinins
Agglutinins
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Blood Typing
Blood Typing
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Study Notes
- Blood provides a medium for homeostasis in the cellular environment.
- It transports O2 and nutrients to body cells, removing CO2 and waste.
- It connects organ systems through hormone action.
- Other functions include acid-base balance, destroying foreign organisms, distributing body heat, and preventing blood loss through coagulation.
- Adult males have an average blood volume of 5-6 L, while adult females have 4-5 L.
- Blood consists of plasma and formed elements (red blood cells, white blood cells, and platelets).
- Red blood cells (RBCs) or erythrocytes constitute about 45% of total blood volume, a figure known as the hematocrit.
- Leukocytes (white blood cells) and platelets make up 1% of blood volume.
- Plasma makes up approximately 54% of blood volume.
- Normal blood volume is roughly 8% of a person’s weight; for a 70 kg person, this is 5.6 L.
- RBCs contain hemoglobin to carry O2 to body cells and CO2 away.
- Males average 16 g of hemoglobin per 100 ml of red cells, while females average around 13 g.
- Blood has 5 types of white blood cells (leukocytes), categorized as granulocytes and agranulocytes.
- Granulocytes contain pigmented granules in their cytoplasm, while agranulocytes do not have visible granules.
- Human blood typing is a classification system based on specific glycoproteins (agglutinogens) on the RBC plasma membrane surface.
- Agglutinogens are genetically determined.
- Antibodies or agglutinins in plasma can react with RBCs bearing different antigens, causing agglutination and hemolysis.
- Blood typing is essential before transfusions to prevent adverse reactions.
- Blood typing systems exist for various antigens, but ABO and Rh blood groups are routinely tested for.
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