1. What is the ball and socket joint?
2. What is the use of bones in our body?
3. Which of the skull bones are movable?
4. What is the use of skeleton system?
5. Bones are made up of?
Answers
Answer:
1] Ball and socket joint, also called spheroidal joint, in vertebrate anatomy, a joint in which the rounded surface of a bone moves within a depression on another bone, allowing greater freedom of movement than any other kind of joint.
2] Bones work with muscles and joints to hold our body together and support freedom of movement. This is called the musculoskeletal system. The skeleton supports and shapes the body and protects delicate internal organs such as the brain, heart and lungs. Bones contain most of our body's calcium supply.
3] The only bone in your skull that forms freely movable joints is your mandible, or jawbone.
4] The skeletal system works as a support structure for your body. It gives the body its shape, allows movement, makes blood cells, provides protection for organs and stores minerals. The skeletal system is also called the musculoskeletal system.
5] Bones are made up of a framework of a protein called collagen, with a mineral called calcium phosphate that makes the framework hard and strong. Bones store calcium and release some into the bloodstream when it's needed by other parts of the body.