Fitness and body systems

• Where are blood cells produced in the body?

  In the bone marrow
• What is the function of platelets in the blood?

  They help clot the blood
• What is the primary function of red blood cells?

  To transport O₂
• How do white blood cells contribute to the immune system?

  They help fight infection
• What minerals are stored in bones to help strengthen them?

  Calcium and phosphorus
• The skeletal system is made up of bones, cartilage, ligaments, tendons, joints, and muscles.
• Bones are the hardest part of our bodies and protect organs like the brain and heart.
• Bones protect internal organs such as the brain and heart.
• Tendons attach muscle to bone and allow us to move.
• Ligaments attach one bone to another bone.
• Tendons attach muscle to bone.