YR1-B2-LSN1

• Biologie
• Middelbare school
• havo, vwo
• Leerjaar 1

SKELETONS

FUNCTIONS OF THE SKELETON:

• SUPPORT
• MOVEMENT
• PROTECTION
• BLOOD CELL PRODUCTION

SUPPORT

• WE CAN'T STAND UP STRAIGHT OR EVEN LIFT OUR HEAD WITHOUT OUR BONES.
• WITHOUT THEM WE WOULD BE A PUDDING. 

I-Books p. 2-3

MOVEMENT

• BECAUSE OUR MUSCLES PULL ON BONES AND THE BONES THEN MOVE.
• OUR MUSCLES ARE ATTACHED TO THE BONES WITH TENDONS.

PROTECTION

• IMPORTANT ORGANS ARE PROTECTED BY BONES.
• LIKE YOUR LUNGS, HEART AND BRAIN 

MAKE BLOOD

• THE BONE MARROW OF LARGER BONES CAN PRODUCE BLOOD CELLS.
• PLATELETS, RED AND WHITE BLOOD CELLS

I-Books p. 2-3

TYPES OF SKELETONS:

• EXOSKELETON
• ENDOSKELETON
• LIQUID SKELETON

ENDOSKELETON

• THE BONES ARE INSIDE THE BODY.
• OFTEN MADE OF CALCIUM AND COLLAGEN.

I-Books p. 4-5

EXOSKELETON

• THE BONES ARE OUTSIDE THE BODY.
• THESE ANIMALS OFTEN NEED TO MOULT TO GROW.
• THEY OFTEN ALSO DO METAMORPHOSIS.

I-Books p. 4-5

LIQUID SKELETON

• THERE ARE NO BONES.
• THERE ARE TUBES FULL OF LIQUID.
• THESE ARE USUALLY WATER ANIMALS.
• WORMS HAVE THIS TYPE OF SKELETON.

I-Books p. 4-5

Build your own pasta skeleton