Transcript Bone
BONES Matt, Tyler and Joe Outline • • • • • Developmental Anatomy Bone Formation and Ossification Stored and Stores Consumed Rebuilds (Grows) Developmental Anatomy • • • • 5th week 6th week 7th week 8th week Stages Bone Formation or Ossification • Intramembranous • Endochondral Intramembranous ossification • Fibrous connective tissue membrane • Bone matrix is secreted • Woven bone and periosteum form • Compact bone forms and red marrow appears Endochondral ossification • • • • • Development of cartilage model Growth of cartilage model Development of the primary ossification center Development of the secondary ossification center Formation of articular cartilage and epiphyseal plate Aging & Bone Tissue • Bone is being built through adolescence, holds its own in young adults, but gradually lost in aged. • Demineralization • Decreased in protein synthesis Bone Stores • Solid minerals • Calcium and phosphorus • Your bones contain roughly 99 percent of the calcium and 85 percent of the phosphorus in your body • As components of mixed crystals, minerals transform spongy bone matrix into a rigid structure Good-for-Your-Bones Foods Food Nutrient Dairy products such as low-fat and non-fat milk, yogurt and cheese Calcium. Some dairy products are fortified with Vitamin D. Fish Canned sardines and salmon (with bones) Fatty varieties such as salmon, mackerel, tuna and sardines Calcium Fruits and vegetables Collard greens, turnip greens, kale, okra, Chinese cabbage, dandelion greens, mustard greens and broccoli. Spinach, beet greens, okra, tomato products, artichokes, plantains, potatoes, sweet potatoes, collard greens and raisins. Tomato products, raisins, potatoes, spinach, sweet potatoes, papaya, oranges, orange juice, bananas, plantains and prunes. Red peppers, green peppers, oranges, grapefruits, broccoli, strawberries, brussels sprouts, papaya and pineapples. Dark green leafy vegetables such as kale, collard greens, spinach, mustard greens, turnip greens and brussel sprouts. Fortified Foods Vitamin D Calcium Magnesium Potassium Vitamin C Vitamin K Calcium and vitamin D are sometimes added to certain brands of juices, breakfast foods, soy milk, Calcium, rice milk, cereals, snacks and breads. Vitamin D Stored • Bone is stored in the body within softner bodily tissues (muscle and adipose) • Location of the bone determines its function • Ribs • Skull • Joints Layer (Outer) • Hard outer layer of bone is referred to as cortical or compact bone • Cortical bone is covered in osteoblasts and osteocytes • Metabolically active and constantly reabsorb and create bone Layer (Inner) • Cancelllous/ trabecular/ spongy bone • Houses the bone marrow and stem cells • Created in the bone marrow • Platelets • Red blood cells • White blood cells