16239575
Description
Flashcards by Luke Evans, updated more than 1 year ago
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Created by Luke Evans
almost 6 years ago
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| Question | Answer |
| The skeletal system has 6 major functions... | 1. Support 2. Shape 3. Protection 4. Mineral storage 5. Haematopoiesis 6. Leverage |
| There are 3 types of animal skeletons... | 1. Hydrostatic skeletons 2. Exoskeletons 3. Endoskeletons |
| There are 5 main classifications of bone... | 1. Long 2. Short 3. Flat 4. Sesamoid 5. Irregular |
| Bones are living tissues with distinct compartments; a long bone consists of... | 1. An epiphysis on each end 2. A diaphysis in the middle 3. A metaphysis between each epiphysis & diaphysis |
| There are several types of bone tissue, including: | 1. The periosteum 2. Compact bone 3. The endosteum 4. The medullary cavity 5. Spongy bone |
| Wolff's law states that... | Trabeculae are aligned along the principle lines of stress: they can adapt in response to pressure! |
| There are 3 types of bone cells... | 1. Osteoblasts 2. Osteocytes 3. Osteoclasts |
| Osteoporosis and osteopetrosis are examples of bone pathologies due to impaired function of bone cells. | 1. Osteoporosis a. "Brittle bones" b. Osteoclast activity > Osteoblast activity 2. Osteopetrosis a. Excessively thick bones b. Osteoblast activity > Osteoclast activity |
| Bone is composed of 67% inorganic component & 33% organic component. | 1. Inorganic component a. Hydroxyapatite 2. Organic component a. 90% collagen b. 10% other proteins |
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