3.1.11 Skeletal system We will learn about the skeletal system by taking notes and doing a mini lab...
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Transcript of 3.1.11 Skeletal system We will learn about the skeletal system by taking notes and doing a mini lab...
3.1.11 Skeletal system3.1.11 Skeletal system
• We will learn about the skeletal system by We will learn about the skeletal system by taking notes and doing a mini labtaking notes and doing a mini lab
• TEK 7.12 B TEK 7.12 B • Warm up: George needs to go 6 miles in 30 Warm up: George needs to go 6 miles in 30
minutes. How fast must he travel in miles per minutes. How fast must he travel in miles per hour? hour?
Skeletal System NotesSkeletal System Notes
Functions: 1.1.Provide a framework for shapeProvide a framework for shape2.2.Support and movementSupport and movement3.3.Protects vital organsProtects vital organs4.4.Stores minerals (calcium and phosphate)Stores minerals (calcium and phosphate)5.5.Produces red blood cells within the marrow Produces red blood cells within the marrow
of long bonesof long bones
• As a baby most of your 206 bones were made As a baby most of your 206 bones were made up of flexible up of flexible cartilage
• As you grow up your bones become As you grow up your bones become ossified oror hardened by minerals such as hardened by minerals such as calcium
• As an adult As an adult cartilage is is found at the ends of found at the ends of the bone and serves as the bone and serves as a shock absorber for a shock absorber for jointjoint
• A joint is where two bones meetis where two bones meet• Connective tissues that holds bones together Connective tissues that holds bones together
are called are called ligaments
Do you have a spine?
• Vertebrates have a have a backbonebackbone
• Invertebrate do NOT have a do NOT have a
back boneback bone
Inside or Outside?
• Exoskeleton- animals that animals that have external have external skeletonsskeletons
• Endoskeleton- the skeleton is the skeleton is on the insideon the inside
Joint Type Location of joint Type of movement
Fixed Cranium None
Pivot Between vertebrae
Slight rotation
Ball and socket
Shoulder and hip wide range, circular motion
Hinge Elbows, knees, fingers
Back and forth
Gliding Wrist and ankle bones
sliding
Joint Lab• Different joints allow certain types of Different joints allow certain types of
movements and different range of motion. movements and different range of motion. • Go to each station and observe your partner Go to each station and observe your partner
perform the activity. perform the activity. • Discuss with your partner what type of joints Discuss with your partner what type of joints
were used and record it in your chartwere used and record it in your chart
Activity Name Type of joint(s)
Analyze it! Analyze it!
1.1. Which types of movement required more than Which types of movement required more than one type of joint? one type of joint?
2.2. Why do most types of movement require many Why do most types of movement require many joints working togetherjoints working together
3.3. Which type of movement require many joints Which type of movement require many joints working together? working together?
4.4. Name two other movements that require the Name two other movements that require the use of hinge jointsuse of hinge joints
5.5. Which type of joint was not mentioned as a Which type of joint was not mentioned as a moveable joint in this activity? moveable joint in this activity?