Tag: production of blood cells

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Questions Related to production of blood cells

Multiple choice production of blood cells body fluids and circulation biology

Which of the following cells are derived from myeloid progenitors?

  1. Macrophages

  2. Megakaryocytes

  3. Granulocyte

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
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.
Multiple choice production of blood cells body fluids and circulation biology

Blood bank of human body is

  1. Spleen

  2. Liver

  3. Bone

  4. Kidney
Reveal answer Fill a bubble to check yourself
A Correct answer
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'

Multiple choice production of blood cells body fluids and circulation biology

Total oxygen that can be carried by blood is?

  1. $1000-1200$ ml
  2. $2000-3000$ml
  3. $200$ml
  4. $100$ml
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The total oxygen-carrying capacity of blood is determined by the hemoglobin concentration and its binding affinity. In a healthy adult, this typically ranges between 1000 and 1200 ml when fully saturated.

Multiple choice production of blood cells body fluids and circulation biology

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

  1. 96 :2 : 2

  2. 45 : 45 : 10

  3. 50 : 45 : 5

  4. 80 : 10 : 10
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In healthy adults, hemoglobin A (HbA) constitutes the vast majority of hemoglobin, while HbA2 and HbF are present in very small amounts. The ratio 96:2:2 is the standard physiological representation for these percentages.

Multiple choice production of blood cells body fluids and circulation biology

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

  1. RBCs

  2. WBCs

  3. All blood cells

  4. Liver cells
Reveal answer Fill a bubble to check yourself
A Correct answer
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' .

Multiple choice production of blood cells body fluids and circulation biology

Cells formed in bone marrow include

  1. RBC

  2. RBC and leucocytes

  3. Leucocytes

  4. Lymphocytes
Reveal answer Fill a bubble to check yourself
B Correct answer
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'.