Haemopoiesis
Main Components of Blood Sites of normal haemopoiesis Haemopoiesis stem cell Role of bone marrow in haemopoiesis Factors affecting haemopoiesis
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Question 1
What are the main components of blood?
Explanation
The main components of blood are plasma, red blood cells, white blood cells, and platelets.
Question 2
Where does normal haemopoiesis primarily take place in adults?
Explanation
In adults, normal haemopoiesis primarily takes place in the bone marrow.
Question 3
What is a haemopoietic stem cell?
Explanation
A haemopoietic stem cell is a stem cell that develops into various types of blood cells.
Question 4
Which role does bone marrow play in haemopoiesis?
Explanation
Bone marrow generates and stores blood cells, making it crucial for haemopoiesis.
Question 5
Which factor can affect haemopoiesis?
Explanation
Diet can affect haemopoiesis by providing essential nutrients for blood cell production.
Question 6
What type of blood cells do haemopoietic stem cells primarily produce?
Explanation
Haemopoietic stem cells primarily produce blood cells.
Question 7
Which of the following is NOT a component of the blood?
Explanation
Neurons are not a component of blood; blood comprises red blood cells, white blood cells, plasma, and platelets.
Question 8
What is the primary location of haemopoiesis during fetal development?
Explanation
During fetal development, the liver and spleen serve as the primary sites for haemopoiesis.
Question 9
Which component of blood mainly functions in immune response?
Explanation
White blood cells primarily function in immune response.
Question 10
Which nutrient is critical for the production of red blood cells?
Explanation
Iron is critical for the production of red blood cells.
Question 11
What can prevent effective haemopoiesis in the body?
Explanation
Chronic diseases can prevent effective haemopoiesis by negatively impacting bone marrow function.
Question 12
What is the liquid component of blood that carries cells and nutrients?
Explanation
Plasma is the liquid component of blood that carries cells and nutrients.
Question 13
Bone marrow is primarily composed of which type of tissue?
Explanation
Bone marrow is primarily composed of connective tissue.
Question 14
The process of blood cell formation is known as?
Explanation
The process of blood cell formation is known as hematopoiesis.
Question 15
Which of the following factors does NOT affect haemopoiesis?
Explanation
The color of blood does not affect haemopoiesis; other factors such as environmental toxins, genetic factors, and stress levels do.
Question 16
Which type of white blood cell is primarily involved in producing antibodies?
Explanation
B lymphocytes are primarily involved in producing antibodies in the immune response.
Question 17
Which of the following is a key factor that promotes erythropoiesis?
Explanation
Testosterone is a key factor that promotes erythropoiesis, the production of red blood cells.
Question 18
What is the lifespan of an average red blood cell in the human body?
Explanation
An average red blood cell has a lifespan of approximately 120 days in the human body.
Question 19
What is the primary site of normal haemopoiesis in adults?
Explanation
In adults, the bone marrow is the primary site for haemopoiesis, where the formation of blood cells occurs.
Question 20
Which factor is least likely to affect haemopoiesis?
Explanation
While nutritional deficiencies, age, and hormonal changes can significantly impact haemopoiesis, a person's favorite color has no influence on the process.