1 / 33

Skeletal System

Skeletal System. What is included in skeletal system?. Bones Ligaments (bone to bone) Tendons (bone to muscle). Bone Function. Support Protection Movement Blood cell formation Inorganic salt storage. A closer look at bone tissue. Spongy vs. Compact Bone.

aderyn
Download Presentation

Skeletal System

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Skeletal System

  2. What is included in skeletal system? • Bones • Ligaments (bone to bone) • Tendons (bone to muscle)

  3. Bone Function • Support • Protection • Movement • Blood cell formation • Inorganic salt storage

  4. A closer look at bone tissue

  5. Spongy vs. Compact Bone Spongy bones don’t have concentric circles, but trabeculae (sheets/spikes)

  6. Components of all bone tissue • Organic Components (35%) • Osteocytes • Osteoclasts-resorption • Collagen (main component) • Gives bone strength and resilience

  7. Components of Bone Tissue B. Inorganic components (65%) 1. Mineral salts = calcium and phosphorus a. make bone hard and resistant to crushing

  8. Types of Bones • Long Bone • Diaphysis/Shaft • Epiphyses/Heads • Epiphyseal line • Periostenum • Nutrient Foramen • Articular cartilage Examples?

  9. Types of Bones 2. Short Bone

  10. Type of Bone 3. Flat Bones Examples?

  11. Types of Bones 4. Irregular Bones

  12. Osteogenesis/Ossification • Embryos have only connective tissue “skeletons,” no bone • Ossification begins at 6-7 weeks • 2 Mechanisms: • Intramembranous ossification • Endochondral ossification

  13. Intramembranous Calcification • Originate from sheetlike layers of connective tissue

  14. Endochondral Ossification • Originate from masses of connective tissue

  15. Through infancy and childhood, growth occurs at epiphyseal plate

  16. Ossification Timetable

  17. Bone Remodeling and Repair

  18. Bone Remodeling • Controlled by: • Parathyroid hormone (stimulates osteoclasts) • Calcitonin (inhibits osteoclasts)

  19. What do you need for proper growth and remodeling? • Minerals • Vitamins • Hormones • HGH • Sex hormones • PT • Calcitonin

  20. How does exercise affect your bones? • Mechanical Stress causes increased deposition of mineral salts and productions of collagen fibers • Makes bones stronger

More Related