Skeletal System

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force that moves bones

Skeletal System and Muscular System

MUSCULAR SYSTEM

Types Of Muscel

Cardiac

does'nt tire quickly

found in heart

Smooth

React slow, does'nt tire easy

Found In internal organs

Skeletal

attached to bone by tendon

React and tire quickly

attached to skeleton

Muscel Control

Involuntary

Ex. Cardiac

Muscel you control

Voluntary

Ex. Running, turning a book

You dont have to think about it

How Muscels Work

Muscels release energy from breaking down gluose

one contracts, one relaxes

Injuries

Happens when muscels are over-worked

Tear

Muscel streches to far, pulled apart

Cramp

muscel contracts strongly

SKELETAL SYSTEM

Marrow

Yellow Marrow

Fat is stored

Red Marrow

Red blood cells made

Outer membrane

where blood vessels and nerves enter and leave bone

Compact Bone

many small canals, where blood vesels enter and leave

very hard, not solid

Boens are hard

They are made up of hard minerals-calcium and phosporus

Spongy Bone

Light wieght, strong, many spaces

5 major functions

protect organs

movement

for structure

to make blood cells

stores minerals

Tendon

Connects muscle to bone

Joints

print tommorow before school/ monday before school

Ball socket joint

shoulders

hips

gliding joint

ankle

wrist

Imovable joint

skull

Pivot joint

neck

Hinge joint

knee

elbow

Ligaments

Connect muscle to bone

Axial Skeleton

skull,ribs and vertebrae

Appendicular skeleton

upper and lower extermities, shoulder and hip bones