Download skeletal-system

 Gives
support
 Protects organs
 Helps in
movement
 Makes blood
(hematopoiesis)
 Stores minerals
(ex: calcium)

Inside the bone

Outside the bone
2
parts:
› Compact Bone
 Strong
 Support
› Spongy Bone
 Looks like a sponge
 Holes contain marrow
 Marrow makes blood cells
Cartilage
› Flexible
› Cushions joints
› Reduces friction because it is
slippery
Joint: any place in
the body where 2
or more bones
come together
 Ligament: strong
band of tissue that
connects 2 bones
together

Immovable
 Movable


Joints where the bones DON’T move
relative to each other
Skull
Pelvis (Hips)
Hinge: back and forth
 Ball-and-Socket: bone with round end fits
into cup-like bone
 Pivot: one bone rotates around another






Simple fracture
Compound fracture
Compression fracture
Depression fracture
Greenstick fracture

Bone fracture where bone does not
break the skin

Bone fracture where bone does break
the skin

Bone fracture where the bone “squishes”

A break in the cranial bone in which the
bone depresses inward toward the brain

The bone doesn’t
break all the way
through
› Common in young
kids

https://youtu.be/iPiCqAyBJy4