The diagram below shows blood cells. Name them. Where are the white cells manufactured? What is the source of platelets? Outline four functions of blood. List the four major blood groups.

here are the answers to the questions:

17. The diagram below shows blood cells. Name them.

• P: Red blood cells (and a platelet)
• Q: White blood cells

18. Where are the white cells manufactured?

• White blood cells are primarily manufactured in the bone marrow.

19. What is the source platelets in the boy?

• Platelets are fragments of large cells called megakaryocytes, which are found in the bone marrow.

20. Outline four functions of blood.

• Transport: Carries oxygen from the lungs to tissues and carbon dioxide from tissues to the lungs. Transports nutrients, hormones, and waste products.
• Protection: Contains white blood cells that fight infections and antibodies that provide immunity.
• Clotting: Platelets and clotting factors prevent excessive blood loss from injuries.
• Regulation: Helps regulate body temperature, pH, and water balance.

21. List the four major blood groups.

• A
• B
• AB
• O