bones and joints
DESCRIPTION
Bones and Joints. Bone Structure. Bones have several parts Bones have bumps and pits so muscles can attach to them. Bone covering. The surface of bones are covered in a tough membrane called periosteal Small blood vessels in the periosteal carry nutrients into the bone. Compact bone. - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Bones and Joints](https://reader035.vdocument.in/reader035/viewer/2022062323/56815c69550346895dca7bbe/html5/thumbnails/1.jpg)
Bones and Joints
![Page 2: Bones and Joints](https://reader035.vdocument.in/reader035/viewer/2022062323/56815c69550346895dca7bbe/html5/thumbnails/2.jpg)
Bone Structure
• Bones have several parts• Bones have bumps and pits so muscles can
attach to them
![Page 3: Bones and Joints](https://reader035.vdocument.in/reader035/viewer/2022062323/56815c69550346895dca7bbe/html5/thumbnails/3.jpg)
Bone covering
• The surface of bones are covered in a tough membrane called periosteal
• Small blood vessels in the periosteal carry nutrients into the bone
![Page 4: Bones and Joints](https://reader035.vdocument.in/reader035/viewer/2022062323/56815c69550346895dca7bbe/html5/thumbnails/4.jpg)
Compact bone
• Hard strong layer of bone underneath the periosteal
• Gives bones strength• Contains deposits of calcium
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Spongy Bone
• Has many small, open spaces to help make bones lightweight.
• In the center of spongy bone is a cavity called marrow
• Marrow produces red blood cells
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Cartilage
• Smooth slippery, thick layer covering the end of bones
• It is flexible and acts a shock absorber• Reduces friction
![Page 7: Bones and Joints](https://reader035.vdocument.in/reader035/viewer/2022062323/56815c69550346895dca7bbe/html5/thumbnails/7.jpg)
Bone Formation
• Before birth our skeletons are made of cartilage
• Bone forming cells deposit calcium and phosphorous to create bones
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Joints
• A place where two or more bones meet• Held together by ligaments
![Page 9: Bones and Joints](https://reader035.vdocument.in/reader035/viewer/2022062323/56815c69550346895dca7bbe/html5/thumbnails/9.jpg)
Different types of joints
• Pivot – top of neck• Hinge – knees and elbows• Ball and socket - shoulder• Gliding - vertebrae
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Juvenile Idiopathic Arthritis
• No known cause• Joints swell up, hurt, and get stiff• Affects kids