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| Question | Answer |
| 1) Name the 3 parts of the bone structure and define its place. | Diaphysis – Shaft of a long bone, its is long and cylindrical, the outer layer of the compact bone. The Medullary cavity containing yellow bone marrow. The Epiphyses forms the proximal and distal ends of a long bone The Metaphyses (Meta=between) is the growth in the length that occurs at the growth plate.(also known as the epiphyseal plate). |
| 2) What does the epiphysis contain? | Hyaline cartilage and this forms an “ epiphyseal growth plate ”. The growth plate is always active in dividing and causing bone to elongate from each end. |
| 3) What happens to the epiphyseal cartilage in adults? | No longer present and elongation (growth) of bones has stopped. This then becomes an epiphyseal line as the growing cartilage is replaced by calcified bone. |
| 4) What is the Periosteum? | A white double layered membrane that covers the external surface of bone if it isn’t already covered with articular cartilage. Tough fibrous layer Inner layer has osteoblasts = helps bone growth in thickness Rich supply of blood by vessels that penetrate the bone and enter to the medullary cavity Rich in sensory nerves |
| 5) Describe the function of the periosteum | Protects bone, Point of attachment for ligaments and tendons , Nourishes bone tissue, helps repair fractures. |
| 6) Name the different tissues in the skeletal system. | For bone; Compact and Spongy. For Cartilage; Hyaline and Fibrocartilage. |
| 7) Describe compact bone | It is dense, and smooth, outer layer. Forms the external surface of bones but only the shaft of the long bones. |
| 8) Describe the function of the Compact bone. | Protects and supports, resists stress of weight and movement |
| 9) Describe the Spongy Bone | In the interior of bones; inside ends of long bones and interior of other bones. Honeycomb of trabeculae orientated along lines of stress. |
| 10) Describe the function of the Spongy bones | Provides tissue support and its lightweight. Houses red bone marrow and yellow bone marrow. |
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