Bell Ringer: 1.What keeps tibia from shifting posteriorly? 2.What provides stability and cushion? 3.What prevents lateral knee collapse? 4.What connects bone to bone? 5.What connects muscle to bone? PCL Meniscus LCL Tendons Ligaments Turn in homework assignment from last time to me…
Bone Types, Layers, and Sections
Joke of the Day: 6b/man-dressed-as-a-scarecrow-gets- punched-from-that-happened
Bone types 1.Long bone – Femur (longest in body!)
Bone types 1.Long bone – Femur 2.Flat bone - Sternum
Bone types 1.Long bone – Femur 2.Flat bone – Sternum 3.Irregular bone - Pelvis
Bone types 1.Long bone – Femur 2.Flat bone – Sternum 3.Irregular bone – Pelvis 4.Short bone - Talus
Bone layers 1.Periosteum - “around the bone” thin, transparent place for muscle attachment
Bone layers 1.Periosteum - 2.Compact - white, dense, full of canals osteocytes (bone cells) found here.
Bone layers 1.Periosteum - 2.Compact - 3.Spongy bone - honeycomb shape, flexible strongest layer
Bone layers 1.Periosteum - 2.Compact - 3.Spongy bone - 4.Marrow - found in large bones red = RBC’s yellow = WBC’s
Bone sections (Label) 1.Proximal epiphysis Proximal Epiphysis
Bone sections (Label) 1.Proximal epiphysis 2.Diaphysis Diaphysis
Bone sections (Label) 1.Proximal epiphysis 2.Diaphysis 3.Distal epiphysis Distal Epiphysis
Chemical Composition of Bone Bone Matrix: – Organic Parts: Collagen (proteins) Growth Factor (vitamins and hormones) – Inorganic Parts: Bone minerals “ground substance” (calcium and salts)