TOPIC: Locomotive Systems

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Presentation transcript:

TOPIC: Locomotive Systems Aim: Explain the parts and functions of the skeletal system. Do Now- Explain advantages of locomotion. HW: Read pages 487-489. Write recall notes about what joints are and the different types of joints. Due tomorrow!

The smallest is the stirrup bone in the ear which can measure 1/10 of an inch.

Your face has 14 bones.

One fourth of your bones are located in your feet.

True or False: Children often bend their bones rather than break them. TRUE! Their bones are more pliable, and tend to bend more without breaking.

Connective tissue that connects bone to bone Connective tissue that connects muscle to bone 1. Ligaments 2. Tendons

Flexible connective tissue 3. Cartilage Flexible connective tissue

Found: at ends of bones for cushioning and protection

in bw vertebrae

Give shape to certain body parts (ears, nose)

Maindex Months before birth, the skeleton is made of cartilage. Gradually the cartilage breaks down and is replaced by bone. Cartilage is replaced slowly by bone as solid tissue grows outward. Over time, the bone reshapes to include blood vessels, nerves, and marrow. Bone-forming cells deposit the minerals calcium and phosphorous in bones, making the bone tissue hard.

Skeleton of newborn made mostly of cartilage

4. Bones

Cranium = Skull

Clavicle = collar bone Rib cage (protect)

Sternum = breast bone

Vertebrae = backbones

Scoliosis

Humerus = upper arm bone Ulna & radius = lower arm

Pelvis = hips

Femur = thigh bone (longest & strongest)

Patella = knee cap

Carpals = wrist bones Metacarpals = hand bones

Phalanges = fingers & toes

Did You Know? Humans and giraffes have the same number of bones in their necks? A Giraffe’s neck vertebrae are just much, much longer!

The only bone not broken so far during any ski accident is one located in your inner ear.

If you break your wrist as an adult it will take you 8 weeks to heal. A five year old child who breaks their wrist only takes 3 weeks to heal.

Let’s summarize… Identify structures that make up your skeletal system. Describe the difference between tendons and ligaments. Explain the function of cartilage. Where is cartilage found?

http://www.youtube.com/watch?v=8d-RBe8JBVs&feature=related http://www.kidport.com/grade5/Science/BodyBones.swf

http://www.bbc.co.uk/schools/podsmission/bones/annie02.shtml