Tag: production of blood cells

Questions Related to production of blood cells

Which of the following cells are derived from myeloid progenitors?

production of blood cells body fluids and circulation biology

  1. Macrophages

  2. Megakaryocytes

  3. Granulocyte

  4. All of the above

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Correct Option: D
Explanation:
Hematopoietic stem cells of bone marrow give rise to myeloid and lymphoid progenitor cells.  Myeloid progenitor cells include macrophages, megakaryocytes, granulocytes, platelets, and erythrocytes. Thus the correct answer is option D.

Blood bank of human body is

production of blood cells body fluids and circulation biology

  1. Spleen

  2. Liver

  3. Bone

  4. Kidney

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Correct Option: A
Explanation:

Spleen is the blood bank of human body as it has the capacity to store considerable amount blood, that can be released in a situation of emergency (about a cup).

So, the correct answer is 'Spleen'

Total oxygen that can be carried by blood is?

production of blood cells body fluids and circulation biology

  1. $1000-1200$ ml

  2. $2000-3000$ml

  3. $200$ml

  4. $100$ml

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Correct Option: A

In normal healthy individuals , the percentage of adult and fetal haemoglobin , HbA : HbA2 : HbF is ____________.

production of blood cells body fluids and circulation biology

  1. 96 :2 : 2

  2. 45 : 45 : 10

  3. 50 : 45 : 5

  4. 80 : 10 : 10

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Correct Option: A

Choose correct alternative in the following statements:
Nucleus is absent in

production of blood cells body fluids and circulation biology

  1. RBCs

  2. WBCs

  3. All blood cells

  4. Liver cells

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Correct Option: A
Explanation:

The nucleus is absent in red blood cells in order to accomodate more space for haemoglobin. It also allows the cell to maintain its biconcave shape which aids diffusion. 

Hence, the correct answer is 'RBCs' .

Cells formed in bone marrow include

production of blood cells body fluids and circulation biology

  1. RBC

  2. RBC and leucocytes

  3. Leucocytes

  4. Lymphocytes

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Correct Option: B
Explanation:
RBCs (Red blood cells) or erythrocytes transport oxygen in the body and formed in bone marrow. They are roughly circular and lack nucleus and other organelles.
Leucocytes or white blood cells (WBCs) may be granular or agranular. Granulocytes include basophils, eosinophils, neutrophils and agranulocytes include monocytes and lymphocytes. These cells are also formed in bone marrow. 
So, the correct answer is 'RBC and leucocytes'.