Skeletal System Bone Markings
Feb 23, 2016
Skeletal System Bone Markings
DO NOW #1
As you come into class, write down the 4 functions of the skeletal system.
When you are done, put your pencil down.
DO NOW #1
4 Functions of the Skeletal System1.
2.
3.
4.
DO NOW #2
http://www.youtube.com/watch?v=F7rq8lhetLA
Bone Markings
Not just flat, smooth and featureless 2 categories
Projections/Processes Depressions/Cavities
Projections/Processes
Grow out from the bone Area where muscle/ligaments attach Form joints
Projections/Processes
Tuberosity Large, rounded projection Ex: Tibial Tuberosity
Crest Narrow ridge of bone; usually prominent Iliac crest
Projections/Processes
Trochanter Large, blunt irregular shaped process Femur
Spine Sharp, slender, pointed projection Spine of the scapula
Projections/Processes
Line Narrow ridge of bone Femoral line
Epicondyle Raised area on or above condyle Humerus
Avulsion Fracture
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
Avulsion Fracture
Osgood-Schlatters
Common among teenagers Often represents an avulsion fracture With growth, a bony callus forms and
the tuberosity enlarges
Osgood-Schlatters
Treatment Decrease stressful activities Apply ice before and after activities Strengthen quads and hamstrings Severe cases: Use a cast
Projections/Processes
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
Notecards 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
Notecards
Tuberosity Crest Trochanter Spine Line
Epicondyle Avulsion Fracture Head Facet Condyle