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Five Major Functions of Skeleton 1. Provides shape and support 2. Enables the body to move 3. Protects internal organs 4. Produces blood cells 5. Store.

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Presentation on theme: "Five Major Functions of Skeleton 1. Provides shape and support 2. Enables the body to move 3. Protects internal organs 4. Produces blood cells 5. Store."— Presentation transcript:

1 Five Major Functions of Skeleton 1. Provides shape and support 2. Enables the body to move 3. Protects internal organs 4. Produces blood cells 5. Store materials until body needs it

2 SHAPE AND SUPPORT Skeleton determines the shape of your body. Skeleton determines the shape of your body. Bone that makes up the center of the skeleton is the backbone. Bone that makes up the center of the skeleton is the backbone. The 26 small bones make up the backbone are called vertebrae. The 26 small bones make up the backbone are called vertebrae. Allow movement (bending, twisting) Allow movement (bending, twisting)

3 MOVEMENT How does the skeleton help the body move? How does the skeleton help the body move? Muscles pull on bones to make the body move. Muscles pull on bones to make the body move.

4 PROTECTION Bones protect the organs in your body. Bones protect the organs in your body. EXAMPLE: EXAMPLE: Skull protects the brain Skull protects the brain Rib cage protects the heart and lungs Rib cage protects the heart and lungs

5 PRODUCTION Some bones in your body produce substances that your body needs. Some bones in your body produce substances that your body needs. The long bones of the arms & legs make blood cells. The long bones of the arms & legs make blood cells.STORAGE Bones will store minerals such as Calcium and Phosphorus. Bones will store minerals such as Calcium and Phosphorus. When your body needs the minerals, the bones release small amounts of them into the blood When your body needs the minerals, the bones release small amounts of them into the blood

6 JOINTS What is a joint? What is a joint? A place in the body where 2 bones come together. A place in the body where 2 bones come together. What are 2 kinds of joints in the body? What are 2 kinds of joints in the body? Movable Movable Immovable Immovable

7 MOVABLE JOINTS Most of the joints in the human body are movable. Most of the joints in the human body are movable. Joints are held together by: Joints are held together by: Ligaments  Connects bone to bone Ligaments  Connects bone to bone Synovial Fluid  clear liquid to lubricate joint Synovial Fluid  clear liquid to lubricate joint Cartilage  cushioning connective tissue Cartilage  cushioning connective tissue Covers the ends of the bones and keeps them from rubbing against each other. Covers the ends of the bones and keeps them from rubbing against each other.

8 IMMOVABLE JOINTS Joints in the body connect bones in a way that allows little or no movement. EXAMPLE: Bones of the skull are held together by immovable joints.

9 FOUR TYPES OF MOVABLE JOINTS Joint Kind of Motion Where it’s found in the body Hinge Forward or backward motion Knees and Elbows Ball and socket Allows bones to swing in a circle Shoulders and Hips Pivot 1 bone rotates around another Neck Gliding 1 bone to slide over another Wrists and ankles

10 FOUR TYPES OF MOVABLE JOINTS Joint Kind of Motion Where it’s found in the body Hinge Forward or backward motion Ball and socket Pivot Gliding

11 FOUR TYPES OF MOVABLE JOINTS Joint Kind of Motion Where it’s found in the body Hinge Forward or backward motion Knees and Elbows Ball and socket Pivot Gliding

12 FOUR TYPES OF MOVABLE JOINTS Joint Kind of Motion Where it’s found in the body Hinge Forward or backward motion Knees and Elbows Ball and socket Allows bones to swing in a circle Pivot Gliding

13 FOUR TYPES OF MOVABLE JOINTS Joint Kind of Motion Where it’s found in the body Hinge Forward or backward motion Knees and Elbows Ball and socket Allows bones to swing in a circle Shoulders and Hips Pivot Gliding

14 FOUR TYPES OF MOVABLE JOINTS Joint Kind of Motion Where it’s found in the body Hinge Forward or backward motion Knees and Elbows Ball and socket Allows bones to swing in a circle Shoulders and Hips Pivot 1 bone rotates around another Gliding

15 FOUR TYPES OF MOVABLE JOINTS Joint Kind of Motion Where it’s found in the body Hinge Forward or backward motion Knees and Elbows Ball and socket Allows bones to swing in a circle Shoulders and Hips Pivot 1 bone rotates around another Neck Gliding

16 FOUR TYPES OF MOVABLE JOINTS Joint Kind of Motion Where it’s found in the body Hinge Forward or backward motion Knees and Elbows Ball and socket Allows bones to swing in a circle Shoulders and Hips Pivot 1 bone rotates around another Neck Gliding 1 bone to slide over another

17 FOUR TYPES OF MOVABLE JOINTS Joint Kind of Motion Where it’s found in the body Hinge Forward or backward motion Knees and Elbows Ball and socket Allows bones to swing in a circle Shoulders and Hips Pivot 1 bone rotates around another Neck Gliding 1 bone to slide over another Wrists and ankles Jaw

18 FOUR TYPES OF MOVABLE JOINTS Joint Kind of Motion Where it’s found in the body Hinge Forward or backward motion Knees and Elbows Ball and socket Allows bones to swing in a circle Shoulders and Hips Pivot 1 bone rotates around another Neck Gliding 1 bone to slide over another Wrists and ankles

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21 BONES – STRONG & LIVING Bones are living (made of cells), and undergo growth and development. Bone Strength: 20% of body weight is bone Stronger than concrete or granite rock WHY? Just like a rock, a bone is packed with minerals…phosphorus and calcium

22 BONE LAYERS Outer membrane  Thin, tough outer covering Compact bone  Hard and dense, not solid, Blood vessels and nerves run through this area Spongy bone  Lots of small spaces, lightweight tissue, contains the marrow Red marrow  Produces blood cells Yellow marrow  Fat storage as an energy reserve

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25 BONE GROWTH & DEVELOPMENT Bones will make new bone tissue when: Bones will make new bone tissue when: 1. During growth 1. During growth 2. In response to the force of the body’s weight 2. In response to the force of the body’s weight 3. Healing a broken bone 3. Healing a broken bone

26 TAKING CARE OF YOUR BONES What can you do to keep your bones healthy? What can you do to keep your bones healthy? Balanced diet Balanced diet Regular exercise Regular exercise A condition in which the body’s bones become weak & break easily? A condition in which the body’s bones become weak & break easily? Osteoporosis  Mineral loss in bones allowing body to become weak and break easily Osteoporosis  Mineral loss in bones allowing body to become weak and break easily


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