The Skeletal and muscular systems

1. Unit B, Chapter 3, Lesson 1 The Skeletal and muscular systems

2. The Skeletal System • Made up of 206 bones. • The bones of the face, skull, vertebral column and rib cage make up your body’s central framework for support. (Protects vital organs!) • Functions: • Supports you • Allows you to move • Protects vital organs • Produces blood cells

3. The Skeletal System Skull Clavicle Scapula Humerus Sternum Rib Cage Vertebrae Ulna Radius Femur Patella Fibula Tibia

4. 24 0 :10 0 The Femur is a bone in your arm. • Yes • No

5. 10 What is the long bone in your upper arm called? • Radius • Femur • Humerus

6. 24 0 If someone were to tell you that they broke their collar bone, which bone would they be talking about? • Scapula • Skull • Phalanges • Clavicle

7. 10 0 of 24 Your vertebrae protect your… • Brain • Spinal Cord • Liver

8. 10 Seconds Remaining Which of the following connect bones to bones? • Ligaments • Tendons • Cartilage

9. Anatomy of a Bone The Inside of a Long Bone Parts of a Long Bone • Spongy Bone • Bone Marrow • Compact Bone • Periosteum • http://kidshealth.org/misc/movie/bodybasics/bone.html

10. Support and Movement • Which bones provide support and movement? • Bones of the: • Arms • Legs • Pelvis • They work with muscles to help us move! • http://kidshealth.org/teen/your_body/body_basics/bones_muscles_joints.html

11. Important “Bone” Terms • Cartilage: a strong flexible tissue on the ends of some bones • It provides a cushion where bones come together. • Ligaments: strong cords of tissue that connect the bones in your joints.

12. How do our bones move? • Joint: a point at which two bones meet. • Without joints, you could not move. • Three main kinds of joints: • Hinge Joint • Ball and Socket Joint • Fixed Joint

13. Joints

14. Problems and Caring for the Skeletal System

15. Skeletal System Problems Scoliosis Photograph of someone with scoliosis. • Causes: deformity of the spine win which the spine develops an S-shaped curve when viewed from behind. • Can this affect you? Affects 2% of women and .5% of men in the general population

16. Skeletal System Problems Osteoporosis Osteoporosis Fact! • A disease in which bones become thin and brittle. • Who does this affect? • 55% of people who are over the age of 55. • Of the 10 million Americans who have this disease, 8 million are women and 2 million are men. • (from http://www.nof.org/osteoporosis/diseasefacts.htm) • About 85-90% of adult bone mass is acquired by age 18 in girls and 20 in boys. Building strong bones during childhood and adolescence can help to prevent osteoporosis later in life. • (from http://www.nof.org/osteoporosis/diseasefacts.htm)

17. Skeletal System Problems Sprain What happens when you sprain your ankle? • Stretching or partial tearing of ligaments. • Can be painful and cause swelling around the injured joint. • http://yucky.discovery.com/flash/body/yuckystuff/anklesprain/js.index.html

18. Caring for your Skeletal System • Exercise regularly using weights, walking, running, jumping rope, dancing, hiking, soccer, or basketball (just to name a few activities!). • Wear proper fitting shoes. • Select foods and beverages rich in calcium, phosphorus, and vitamin D. • Sit, stand, and walk with correct posture. • Participate in screenings for scoliosis.