click below
click below
Normal Size Small Size show me how
NRTC Chap 6
A&P
| Question | Answer |
|---|---|
| Longer than they are wide | Long bones |
| Broad as they are long | Short bones |
| Various sized and shaped | Irregular bones |
| Flat, thin, often curved | Flat bones |
| Shaft-like portion of the bone | Diaphysis |
| Bulbous structure | Epiphysis |
| Covering surface of the epiphysis | Articular cartilage |
| Hollow portion | Medullary cavity |
| Dense fibrous membrane that covers the diaphysis | Periosteum |
| Red bone marrow | Blood cell-producing |
| Yellow marrow | Rich in fat |
| Medullary cavity is lined with thin epithelial membrane | Endosteum |
| What separates the epiphysis from the diaphysis at each end of a long bone | Epiphyseal plate/growth plate |
| Osteoblasts | help form bone by secreting substances that comprise the bone's matrix |
| Osteoclasts | dissolve unwanted or unhealthy bone |
| Osteocytes | Mature osteoblasts that have become entrapped in the hardened bone matrix |
| Osseous tissue | Bone |
| Collagen fibers in the matrix make bone highly resistant to stretching forces | Tensile strength |
| Calcium salts allow bones to resist strong squeezing forces | Compressional strength |
| Bone lacks the ability to endure twisting | Torsional strength |
| Consisting of latticework | Spongy/trabeculae |
| Elaborate network of canals and passageways containing nerves and blood vessels | Compact bone |
| 4 factors that affect bone growth and maintenance | Heredity, Nutrition, Hormones, Exercise |
| Simple fracture | bone remains aligned and the surrounding tissue is intact |
| Compound fracture | bone has pierced the skin |
| Greenstick fracture | incomplete, similar to when a green stick breaks |
| Comminuted fracture | bone is broken into pieces |
| Spiral fracture | result of twisting force |