The Skeletal
System
{
Your skeletal system has many functions…






Provides support for the body
Protects internal tissues and organs from
damage
Acts as the framework for attached muscles
Allows movement of limbs and digits
Produces new red and white blood cells
Stores fat and minerals (calcium and
phosphorus)
There are 206 bones in the
human body.

http://kidshealth.org/misc/movie/bodybasics/b
one.html

Key terms from the clip: Bone Marrow,
Compact Bone, Spongy Bone

Ossification: the process by which bone is
formed, renewed, and repaired.
Bone Structure


Bones are categorized by their shape.
Shapes include long bones, short bones, flat
bones, and irregular bones.
Examples:
Humerus and Femur - Long Bones
Rib, Skull, Sternum – Flat Bones
Wrist, Carpals (hands), Tarsals (feet)– Short Bones
Vertebrae and Hip – Irregular Bones
Types of Bones

Cartilage: a strong, flexible connective tissue that
can act as a cushion between bones to reduce friction
or as a flexible structure for soft parts of the body.

Ligament: a band of fibrous, slightly elastic
connective tissues that attaches one bone to another.
Ligaments attach to bones to make joints.

Tendon: a fibrous cord that attaches muscle to the
bone. Also holds joints together.
Connective Tissue

Joints: Are points at which bones meet.
Different Types of Joints:
Flexible joints include ball and socket, hinge, pivot,
and ellipsoidal joints
Examples:
Hinge joint – Elbow and Knee
Ball and Socket – Hip
Pivot – Rotation of the skull
Ellipsoidal - Wrist
Joints

http://kidshealth.org/misc/movie/bodybasics/b
odybasics_knee.html
Connective Tissue and
Joints
cranium
sternum
humerus
clavicle
scalpula
ribs
vertebrae
The Skeleton
radius
pelvis
ulna
metacarpals
carpals
phalanges
femur
patella
tibia
tarsals
phalanges
fibula
metatarsals

Largest Bone:


Femur
Smallest Bone:

the stapes (ear bone) a.k.a. “stirrup”
Interesting Facts…