 As you come into class, write down the 4 functions of the skeletal system.  When you are done, put your pencil down.

 4 Functions of the Skeletal System

 LA LA

 Not just flat, smooth and featureless  2 categories  Projections/Processes  Depressions/Cavities

 Grow out from the bone  Area where muscle/ligaments attach  Form joints

 Tuberosity  Large, rounded projection  Ex: Tibial Tuberosity  Crest  Narrow ridge of bone; usually prominent  Iliac crest

 Trochanter  Large, blunt irregular shaped process  Femur  Spine  Sharp, slender, pointed projection  Spine of the scapula

 Line  Narrow ridge of bone  Femoral line  Epicondyle  Raised area on or above condyle  Humerus

 Tendon v. ligament?  Muscle can generate a lot of force, sometime more than the attachment site can handle  Too much force is generated, an avulsion fracture occurs  Tendon contracts, ripping the tuberosity where it is attached

 Common among teenagers  Often represents an avulsion fracture  With growth, a bony callus forms and the tuberosity enlarges

 Treatment  Decrease stressful activities  Apply ice before and after activities  Strengthen quads and hamstrings  Severe cases: Use a cast

 Some projections form joints  Head  Bony expansion carried on narrow neck  Humeral/Femoral head  Facet  Smooth, flat articular surface  Spinal facet  Condyle  Rounded articular projection

 Using notecards or a piece of paper divided into squares, create note cards of the 10 vocab words from class.  Each word goes on 1 card, and the definition goes on the other  Total of 20 cards  10 for vocab words  10 for their definitions  DO NOT write on both sides of your card  Your ticket out of class is showing Mr. Wyand your flash cards

 Tuberosity  Crest  Trochanter  Spine  Line  Epicondyle  Avulsion Fracture  Head  Facet  Condyle