Human Systems Unit 2. Language Learning Goal Define: Joint Bone Skeleton.
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Transcript of Human Systems Unit 2. Language Learning Goal Define: Joint Bone Skeleton.
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Human Systems
Unit 2
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Language Learning Goal
Define:
• Joint
• Bone
• Skeleton
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Content Learning Goal
• Students will learn what makes our bodies stand up and move by learning about our bones, joints and muscles. You will know at least two examples of each.
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Your Bones
• What keeps our bodies from falling over? Skeletons
• Skeletons have 206 bones!
• Bones are organs made up of tissues
• Bones are hard on the outside and soft on the inside
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Bones Continued
• Bones are all connected to each other. They are joined together by tissues called ligaments.
• Another tissue-cartilage-is between bones.
• Cartilage protects bones from rubbing against each other.
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Bones Continued
• Bones are all different shapes. Some are flat bones that curve around your heart and lungs to protect them.
• Some bones are long bones – these are on your arms and legs to let you move around.
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Your Joints
• Look at your hand and bend your fingers. Each finger has several bones. Fingers bend because of the parts on the ends of each bone…these parts are called joints.
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Joints Continued
• There are different kinds of joints. One is a hinge joint. We have hinge joints in our knees.
• There are also ball-and-socket joints. These can go in any direction, like a shoulder.
• What kind of joint is a wrist? Elbow? Hip? Ankle? Finger?
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Muscles!
• Blink. Swallow. Stand. Step. All these take muscles. Muscles are organs that make our bodies move in certain ways. There are:
1. skeletal muscles to MOVE
2. smooth muscles inside us
3. And the heart (organ).
• What kind of muscles are the stomach, hamstring and bicep?
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How your Muscles Work
Skeletal muscles• Put your elbow on the desk and move
your forearm up and down. How many
muscles do you use? • TWO. One up and one down. Every body part you
can move has two muscles. Each muscle can only go one direction.
• A muscle pulls a bone and contracts or gets shorter.• It relaxes and gets longer when another muscle pulls
the bone.
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Muscles Continued
Biceps and triceps
• Put your hand on the middle of your upper arm. Bend your arm. The lump you feel is your bicep. It contracts and pulls your forearm up.
• Now lower your arm and feel it relax. That means your tricep is contracting and pulling your forearm down.
• Go over Questions #1-2 on Page 109.
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Review
• Answer Questions #1-7 in the Review on Page 110.
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ACTIVITY
• Go over the Skeleton Hand-Out and then fill in the blanks on the worksheet.