Muscles stretch across our bones and are attached with tendons. The skeleton acts like a shield for our vital organs, such as our brain and heart. The skull protects the brain, the ribcage protects the lungs and heart, and the backbone wraps all the way around the spinal cord.
Bone density measures how healthy a bone is — it shows how much mineral matter there is in a square centimetre of bone.
Bone marrow is a tissue found inside bones. Bone marrow is part of the lymphatic system, which plays an important role in the immune system — how our body fights diseases. There are six different kinds of fractures: Doctors use x-rays to help them decide how to set the broken bones so they can join back up with new cells and blood vessels.
Bones need calcium to keep healthy. Calcium can be found in dairy products, dark green leafy vegetables, nuts, orange juice and soy. Vitamin D helps the body and bones absorb calcium — fish and egg yolks both have vitamin D in them.
Smooth muscles and cardiac muscles are also called involuntary muscles, because they move without you telling them to. When muscles feel sore, it can be because of a strain — the muscle fibres have torn a bit and need time to heal.
Access thousands of brilliant resources to help your child be the best they can be. What are bones and muscles? Top 10 facts about bones: Together, the bones in our body are called the skeleton. There are bones in the human body. The main bone in our head is called the skull. Bones have three parts, plus most have a substance deep inside called marrow. Bones need calcium to keep healthy — foods like milk, nuts and broccoli all have calcium in them.
We get bigger and taller when our bones grow. Doctors can tell how healthy our bones are by measuring our bone density.
In addition to muscles, we have joints between our bones to do things like moving our arm up and down, and turning our head. The longest bone in your body is called the femur, which is located in your thigh. Top 10 facts about muscles: Develop your French number skills by matching number digits to words in the 1 to 10 range.
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