20 Questions
Plasma is the liquid component of blood, making up 90% of blood.
False
The main function of blood is:
Oxygen transport
The major site for hematopoiesis in an embryo is:
Yolk sac
Stem cell is also known as:
Pluripotential cell
Formed elements in the blood consist of:
All of the above
In early childhood, the major sites of hematopoiesis are flat bones only (skull, ribs, sternum).
False
Extramedullary hematopoiesis happens in the reticuloendothelial system (liver, spleen, lymph nodes).
True
The factors that cause stem cells to be depleted are:
A+B
Proliferation and differentiation are directly influenced and regulated by growth factors.
True
Erythropoietin is a hormone growth factor which is made by:
Kidney
What type of white blood cells have the specific function of fighting parasitic infections?
Eosinophils
What type of blood cells are elevated in allergic reactions?
Basophils
Which is the largest white blood cell?
Monocytes
Which is the smallest white blood cell?
Lymphocytes
Which of the following is considered a Lymphocyte?
All of the above
Macrophages that are found in the liver are called:
Kupffer cells
B-lymphocytes and T-lymphocytes are functionally similar and morphologically different.
False
An increase in neutrophil count is termed neutropenia.
False
Basophils are the most abundant leukocytes.
False
Only bacterial infections cause neutrophilia.
False
Study Notes
Blood Composition
- Plasma is the liquid component of blood, making up 90% of blood.
Blood Functions
- The main functions of blood are oxygen transport, supply of nutrients, coagulation, and removal of waste.
Hematopoiesis
- The major site for hematopoiesis in an embryo is the yolk sac.
- In early childhood, hematopoiesis occurs in flat bones (skull, ribs, sternum) and later in life, it occurs in the bone marrow.
- Extramedullary hematopoiesis occurs in the reticuloendothelial system (liver, spleen, lymph nodes).
Stem Cells
- Stem cells are also known as pluripotential cells.
- Factors that cause stem cells to be depleted include ionizing radiation, chemotherapy, and a combination of both.
Formed Elements
- Formed elements in the blood consist of erythrocytes, basophils, and platelets.
Growth Factors
- Growth factors directly influence and regulate proliferation and differentiation of cells.
- Erythropoietin is a hormone growth factor produced by the kidney.
White Blood Cells
- Eosinophils are a type of white blood cell that fights parasitic infections.
- Basophils are elevated in allergic reactions.
- Monocytes are the largest white blood cells.
- Lymphocytes are the smallest white blood cells.
- B-cells, T-cells, and natural killer cells are all types of lymphocytes.
- Macrophages found in the liver are called Kupffer cells.
Neutrophils
- An increase in neutrophil count is termed neutrophilia, not neutropenia.
- Neutrophilia can be caused by bacterial infections, but it is not the only cause.
This quiz covers the composition of blood, its functions, and the process of hematopoiesis in different stages of life. Learn about the liquid component of blood, the main functions of blood, and where hematopoiesis occurs.
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