Which components of blood are produced by red bone marrow?

• A. Plasma
• B. Platelets
• C. Red blood cells
• D. Antibodies

Answer: (C)

Verified step by step guidance

1. Understand that red bone marrow is a key hematopoietic tissue responsible for the production of blood cells.
2. Recognize that red bone marrow primarily produces three main types of blood cells: red blood cells (erythrocytes), white blood cells (leukocytes), and platelets (thrombocytes).
3. Identify that plasma is the liquid component of blood and is not produced by red bone marrow. Instead, it is composed of water, electrolytes, proteins, and other substances.
4. Note that antibodies are proteins produced by B cells, a type of white blood cell, which are indeed produced in the red bone marrow, but the antibodies themselves are not directly produced by the marrow.
5. Conclude that the primary components of blood produced by red bone marrow include red blood cells, white blood cells, and platelets, with red blood cells being a direct product of the marrow's hematopoietic activity.