Matching Pairs UNIT 1 NATURAL SCIENCE 4 PRIMARIA THE HUMAN BODY .LOCOMOTOR SYSTEMOnline version PARTES DEL APARATO LOCOMOTOR by rosi rorobar 1 your skeleton's bones join together 2 your skeleton protect your 3 ligaments connect 4 Your muscles give your body 5 your muscles contract and relax when 6 Tendons connect muscles and bones they receive messages from your brain. shape internal organs and support your body the bones and joints at joins