| A | B |
|---|
| Bones | give shape and support to your body. |
| Major muscles of the body | are attached to bone. |
| Internal organs | are protected by bones. |
| Blood cells | are formed in the marrow of some bones. |
| The skeleton is the place where major quantities of | calcium and phosphorus compounds are stored for later use in the body. |
| Calcium and phosphorus | make bone hard. |
| The periosteum is a | tight fitting membrane that supplies the bone with nutrients. |
| The membrane that is also important in bone and growth repair is the | periosteum. |
| Your skeleton has | 206 bones. |
| Long, flat, short, or irregular | are the shapes of different bones. |
| Compact bone | is a hard strong layer of bone that contains elastic fibers, cells, bloodvessels, and calcium and phosphorus. |
| Elastic fibers keep bone from being | to rigid or easily broken. |
| Spongy bone is less compact than compact bone and helps to make the bone | lightweight. |
| Cavity in the bones are filled with | marrow. |
| Marrow produces | red blood cells mostly and a few white blood cells. |
| Cartilage is found at the end of bones and is | flexible, absorbs shock, and makes movement easier. |
| Bone cells are always being made and broken down by | osteoblast and osteoclast. |
| A break in a bone is called a | fracture. |
| A simple fracture occurs when a bone has broken | but dose not go through the skin. |
| A compound fracture causes the | bone to break through the skin. |
| A joint is | where two or more bones meet. |
| An example of a hinge joint would be the | elbow. |
| An example of a ball and socket joint would be the | hip. |
| An example of an immovable joint joint would be the | skull or pelvis. |
| An example of a gliding joint would be the | vertebrae. |
| An example of a pivot joint would be | the radius and ulna in the arm. |
| A ligament | is a tough band of tissue that holds bones together at joints. |
| A muscle is an organ that | contract and gets shorter. As a result, energy is spent and work is done. |
| You control | voluntary muscles. |
| You can not consciouly control | involuntary muscles. |
| Smooth muscles are found | in the stomach, intestines, bladder, penis and blood vessels. |
| Cardiac muscles are found only in the | heart. |
| Skeletal muscles are attached to the | bones. |
| Skeletal muscles are | voluntary. |
| Tendons | attach bone to muscle. |
