Bones contain spongey material that makes blood cells
Red marrow
Bones are organs that are made of what?
Tissue
When you bend your arm, the bicep muscle does what?
Contracts
How many muscles are in your body?
600 muscles
How many bones are in the skeletal system?
206 bones
Cardiac muscles make up the what?
Heart
What covers bones at the joints?
Cartilage
Bones come together at the what?
Joints
What is the body's three types of muscle tissue called?
skeletal, smooth, and cardiac
Strips of strong tissue that connect bones together are called what?
Ligaments
Bones function what?
movement