Question

Cells formed in bone marrow include

• A. RBCs
• B. Leukocytes
• C. Both a and b
• D. Lymphocytes

Answer 1

The correct option is C

Both a and b

The correct option is C.

Explanation of the correct option:

1. Bone marrow is a soft, spongy, jelly-like tissue that makes the components of blood to survive.
2. Bone marrow is located in the center of most bones and in the end of spongy bones in our body.
3. Bone marrow and blood vessels fill cavities of the bones, where they store fat and stem cells and produce blood cells.
4. There are two types of bone marrow which are characterized by their color :
5. Red bone marrow produces blood cells (hematopoiesis).
6. It creates red blood cells (RBCs) that carry oxygen and white blood cells (WBCs) and platelets that prevent infection.
7. Yellow bone marrow stores fat in the body.
8. The cells of yellow bone marrow preserve fat for energy production and develop bone, cartilage, muscles, and fat cells for our body.

Explanation of the incorrect options:

Option A:

1. RBCs are bi-concave disc-shaped cells that have a protein called hemoglobin.
2. The blood gets its color when hemoglobin absorbs oxygen from the lungs.
3. As the blood travels through the body, the hemoglobin releases the oxygen in the tissues.
4. It also carries carbon dioxide and other waste products out of the body.

Option B:

1. The WBCs, also called leukocytes are the defense mechanism of the human body for fighting infections.
2. WBCs are irregular in shape but have a nucleus and an outer buffer coat.
3. They produce antibodies to develop immunity against infections.
4. They are produced in lymph nodes, spleen, etc.

Option D:

1. Lymphocytes are a type of white blood cell and a part of the immune system, which helps in getting rid of diseasing causing organisms in our body.
2. It is made in the bone marrow and found in the lymph.
3. Lymphocytes include natural killer cells, T cells, and B cells.

Final Answer: The cells present in the bone marrow produce red blood cells (RBCs), white blood cells (WBCs), and platelets.