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Walk-In. Take out notebook, folder, pencil box and agenda . Copy this week’s agenda. BIGGIE TEST ON FRIDAY! Study guide passed out on Tuesday!. The Skeletal System. Two skeletons:. Axial – bones of the skull and spine Appendicular – bones of the arms, legs, hips and other limbs.
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Walk-In • Take out notebook, folder, pencil box and agenda. • Copy this week’s agenda. • BIGGIE TEST ON FRIDAY! • Study guide passed out on Tuesday!
Two skeletons: • Axial – bones of the skull and spine • Appendicular – bones of the arms, legs, hips and other limbs.
Did you know? • The human hand has 19 bones but your face only has 14. • Although bones seem really hard, they are ¾ water which makes them spongy. • The longest bone in your body is your thigh bone (the femur). It's about 1/4 of your height. • The smallest bone is the stirrup bone in the ear which can measure 1/10 of an inch. • Did you know that humans and giraffes have the same number of bones in their necks? Giraffe neck vertebrae are just much, much longer! • You have over 230 moveable and semi-moveable joints in your body.
Skeletal System • Functions: Supports the body, gives it shape, protects organs, attachment for muscles. • Bones are alive – growing and changing. • Calcium is the major part or component of bone tissue. • You are born with about 350 bones in your body. • The average person has 206 bones in their body. • The number is not exact because some people have an extra pair of ribs or more bones in their hands and feet.
Medical Names for Bones • Ankle: tarsal • Hipbone: pelvis • Skull: cranium • Wrist: carpal • Collarbone: clavicle • Kneecap: patella • Shoulder blade: scapula • Backbone: vertebrae
More medical terms!Read this slide… Each common bone in the body has a medical name!
Four Different Types of Bones • Long bones: arm, leg, hand, feet • Short bones: wrist, ankle, • Flat bones: skull, ribs, chest • Irregular shaped bones: spine, face
Parts of a Bone • Periosteum: active, living membrane that covers a bone. When a bone breaks, the periosteum cells multiply and grow over the break. • Compact Bone: hard outer surface; hardest part of the bone • Spongy Bone: very porous (lots of holes); nerves and blood vessels are found in the spongy bone • Marrow: middle or center of bone; helps manufacture or make blood cells.