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Classification and Structure of Bones. Goals for Today. Learn about skeletal support system Learn about the 4 bone groups Learn about bone structure Learn about bone markings and their functions. Pg. 78. Support System. Cartilage - gel-like matrix with fibers (EX:collagen)
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Goals for Today Learn about skeletal support system Learn about the 4 bone groups Learn about bone structure Learn about bone markings and their functions
Pg. 78 Support System Cartilage - gel-like matrix with fibers (EX:collagen) - chondrocyte (Cartilage) cells Bone - matrix filled with calcium salts - rigid = calcium salts - flexible = collagen matrix - osteocyte cells
Activity 3 – Heat and HCl on Bones Heat – dries the organic matrix of the bone What will happen? Vinegar – removes calcium salts from bone What will happen?
Hyaline - sturdy support w/ some “give” - EX: nose, trachea, ribs • Elastic • flexible • lots of elastin fibers • - EX: epiglottis, ear • Fibrocartilage • resists compression • EX: intervertebral disks Be able to give examples
Cartilage is your Friend !! Infant Adult
The 4 Bone Groups Long Bones – longer than wide. EX: femur, humerus Short Bones – cube-shaped. EX: tarsals, carpals Flat Bones – thin and flattened. EX: skull, ribs Irregular Bones – “other bones” EX: vertebrae
Pg. 75 Pg. 75
Epiphyseal Plate (Growth)
Central Canal w/ blood vessels, nerves Osteon Lacunae w/ bone cells
Bone Markings Vessel Passage Muscle Attachment Joints
Tuberosity Crest
Head Condyle
Spine Foramen
To Do List • Learn to categorize bones into the 4 groups • Examine femur cross-section. Identify the parts • Look at bone slide. Identify parts • Learn bone marking vocabulary. Identify each • marking on an actual bone • 5. Look at vinegar and heat-treated bones.