Chapter 12. Hard living tissues that make up your skeleton… Support Frame of your “house” &...
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Transcript of Chapter 12. Hard living tissues that make up your skeleton… Support Frame of your “house” &...
Bones & MusclesChapter 12
Bones & Muscles
BonesHard living tissues that make up your skeleton…
Support Frame of your “house”
&
Protect protects organs
Skull – brain Ribs – heart, lungs, stomach Spine (backbone) – spinal cord
◦ 33 bones called vertebrae Spinal cord carries messages from the brain to
the rest of the body.
Patella (kneecap) – knee joint and ends of leg bones
Protection
Ribs & Spine
Cells – tiny living parts that make up our bodies◦ Daily DEATH! (cells die everyday)◦ NEW LIFE! – every day dead cells are replaced
with new living cells.
Tissue – a group of cells working together◦ Bones are made of vary hard tissue
Production
Parts of a Bone
Hollow area with marrow
Hard compact bone
Blood vessels and nerves
Light sponge bone pg. 260
Bones have empty space in them. In some bones these area are filled with marrow.
Marrow◦Soft, jellylike material used to produce new blood cells.
Marrow
Minerals◦Your bones store minerals such as
calcium, magnesium, and phosphorus.
◦ Calcium – makes bones strong Milk & yogurt = good source of calcium
Your bones store minerals and then release them to the rest of your body as cells need them.
Storage
Mr. Bonesskull
phalanges
sternum
ribsvertebrae
femur
patella
Immovable MovableJoints
You
Hip Joint
Allows movement in many directions◦ Examples:
Shoulders Hips
Ball-and-Socket
Hinge Allows only back and forth movements
◦ This type of joint works like a door on a hinge. ◦ Example:
Elbows Knees
Allows side to side movement◦ Example:
Top vertebrae of the neck
Pivot