Lesson 3 Bones

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Lesson 3 Bones

  1. 1. Lesson 3: The Skeletal and Muscular Systems <ul><li>Objectives: </li></ul><ul><li>Identify the major parts of the skeletal system and discuss the function of the system within the body </li></ul><ul><li>Identify the major parts of the muscular system and discuss the function of the system within the body </li></ul><ul><li>Page 128 </li></ul>
  2. 2. Lesson 3: Words to Know <ul><li>Skeletal system - the framework of bones and other tissues that support the body </li></ul><ul><li>Muscular system - consists of tissues that move parts of the body and operate internal organs </li></ul>
  3. 3. Lesson 3: Things to Know <ul><li>A newborn baby has over 300 soft bones </li></ul><ul><li>An adult skeleton has 206 bones </li></ul><ul><li>Ribs (12 pairs - same number for men and women) </li></ul><ul><li>Each upper limb has 32 bones: </li></ul><ul><ul><li>2 in shoulder </li></ul></ul><ul><ul><li>3 in arm </li></ul></ul><ul><ul><li>8 in wrist </li></ul></ul><ul><ul><li>19 in hand and fingers </li></ul></ul>
  4. 4. Lesson 3: Things to Know <ul><li>Each lower limb has 31 bones </li></ul><ul><ul><li>1 in hip (one each side of pelvis) </li></ul></ul><ul><ul><li>4 in leg </li></ul></ul><ul><ul><li>7 in ankle </li></ul></ul><ul><ul><li>19 in foot and toes </li></ul></ul><ul><li>Largest bone in your body is pelvis or hip bone. </li></ul><ul><ul><li>It is made of six bones joined firmly together. </li></ul></ul>
  5. 5. Lesson 3: Things to Know <ul><li>Longest bone in body is the femur located in the thigh. </li></ul><ul><li>Smallest bone in body is the stirrup located deep in the ear. It is hardly larger than a grain of rice. </li></ul><ul><li>Bones contain a lot of calcium (an element found in milk, broccoli, and other foods). </li></ul>
  6. 6. Lesson 3: Things to Know <ul><li>Joints are location where bones come together. There are three types of joints: </li></ul><ul><ul><li>Immovable - skull’s cranium </li></ul></ul><ul><ul><li>Slightly moveable - vertebrae of the spine </li></ul></ul><ul><ul><li>Freely movable - four types </li></ul></ul><ul><ul><ul><li>hinge - knee and elbows </li></ul></ul></ul><ul><ul><ul><li>pivot - neck </li></ul></ul></ul><ul><ul><ul><li>ball and socket - shoulder and hip </li></ul></ul></ul><ul><ul><ul><li>gliding - wrist and ankles </li></ul></ul></ul>
  7. 7. Lesson 3: Words to Know <ul><li>Pivot - the end of one bone rotates inside a ring formed by another. The joint can move up and down and from side to side. </li></ul><ul><li>Gliding - one part of a bone glides over another bone, allowing a small range of sideways movement. </li></ul>
  8. 8. Lesson 3: Words to Know <ul><li>Ball and Socket - the spherical head of one bone moves inside the cup-shaped socket of another. The joint can move in all directions. </li></ul><ul><li>Hinge - joint moves in only one direction, like a door hinge. </li></ul>

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