Matching Pairs body systemsOnline version Look at the words and join them with its system by Luz Álvarez Herrero 1 NOSTRIL 2 WINDPIPE 3 BLOOD 4 SPINAL CORD 5 BRONCHI 6 JOINTS 7 MUSCLES 8 BLOOD VESSELS 9 HEART 10 BRAIN 11 BONES 12 LUNGS