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