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Skeletal System
Class Discussion
• Can anyone name any of the bones and show me where they are located?
Do Now!!
• On page 369, Figure 15.1, draw or trace the skeleton in your notes and label
all the bone on the left side of the page.
Skeletal System
• The skeletal system is your body’s framework, and is an internal system made
up of bones, joints, and connective tissue.
• 206 bones in your body
• https://www.youtube.com/watch?v=ja18CbJU6h8
Functions
• Allows movement: attachment sites for your muscles to make your body move
• Provides support: backbone (vertebrae) is made of 24 bones which support your
head and upper body and protects your spinal cord
• Protects other parts of your body: protects your organs, brain, your lungs and
your heart
• Forms new blood cells: red and white in the marrow of your bones.
• Stores minerals: like calcium and phosphorus
Joints
• Where your bones meet
• Some move in one direction and some have a wide range of motion
• Different types of joints
Different Types of Joints
• Hinge Joints: elbows and knees, which move in only one direction
• Gliding Joints: wrists and ankles, bones which slide over each other
• Pivot Joints: between your neck and head, side to side and up and down
movements and allows for limited rotation
• Ball-in-Socket Joints: hips and shoulders, move in all directions, allows for
rotation
Connective Tissues
• Cartilage: strong, flexible tissue and provides cushioning for your joints
(nose and ears)
• Ligaments: connect bone to bone
• Tendons: connect muscle to bone
Problems of the Skeletal System
• Fracture
• Dislocation
• Sprain
• Osteoarthritis
• Scoliosis
• Osteoporosis
Fracture
• Break in the bone
• Swelling occurs
• Pain
Dislocation
• Bone is pushed out of its joint
• Stretching or tearing or a ligament
Sprain
• Stretching or twisting of ligaments
• Swelling occurs
Osteoarthritis
• Breakdown of cartilage
• Causes swelling and stiffness of the
joints
• Caused by wear and tear
Scoliosis
• Sideways curvature of the spine
• Cause is unknown
Osteoporosis
• Brittle and porous bones
• Long term deficiencies of calcium
and certain hormones, vitamin D
and lack of exercise
Care of the Skeletal System
• Physical activity
• Eat foods high in calcium and phosphorus
• Sit, stand, and walk with good posture
• Pay attention to your shoes
• Wear your seat belt
Work Cited
• Coach Mauk. "Skeletal System Rap Song - "I Got Bones"" YouTube. YouTube, 09 Nov. 2014. Web. 8 Mar. 2016.
• http://www.physio-pedia.com/images/thumb/2/2e/Types_of_fractures.jpg/500px-Types_of_fractures.jpg
• http://www.firstaidforfree.com/wp-content/uploads/2015/10/Dislocation-signs.jpg
• https://thesportsphysio.files.wordpress.com/2013/08/wpid-photo-25-nov-2003-0540.jpg
• http://anatomyacupuncture.com/wp-content/uploads/2014/08/ankle-sprain.jpg
• https://www.letsgocare.org/wp-content/uploads/2015/08/osteoarthtis.jpg
• http://newbridgespine.com/wp-content/uploads/2014/11/4scoliosis-curves1.jpg
• http://scienceblogs.com/lifelines/files/2014/11/osteoporosis.jpg
• http://missbelmonte.weebly.com/uploads/2/4/4/3/24433262/644541_orig.gif
• Merki, Mary Bronson., Michael J. Cleary, and Betty M. Hubbard. Teen Health. New York: Glencoe/McGraw-Hill, 2003. Print.
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