What is it?
who am I ?
what's the system
100

cell

building unit of the living organisms

100

group of tissues

organ

100

help in digestion process

digestive system

200

tissue

group of cells

200

group of cells

tissue

200

help in breathing process

respiration process

300

tendon

connect the muscle to the bone

300

group of organs

system

300

feel hot or cold

nervous system

400

ligament

connect the bone to another bone

400

group of systems

living organism

400

transport nutrients and oxygen

circulatory system

500

joint

when 2 bones meet

500

where the 2 bones meet

joint

500

help the body to move

musculoskeletal system 

(locomotory system)