Crossword Puzzle YA2 - Day 15 - VocabularyOnline version cell (n) - the smallest working part of a living thing circulate (v) - move along a path that returns to the place it started examine (v) - look at very closely involve (v) - to be part of something organ (n) - a body part that has a certain job to do oxygen (n) - the air we breathe vessel (n) - a tube through which liquid travels in a living thing digestive (adj) - connected with the change of food into substances that your body can use DIGESTIVE SYSTEM respiratory (adj) - connected with breathing RESPIRATORY SYSTEM circulatory (adj) - relating to the movement of the blood CIRCULATORY SYSTEM by Huy Vu 1 (adj) - connected with breathing 2 (adj) - relating to the movement of the blood 3 move along a path that returns to the place it started 4 (adj) - connected with the change of food into substances that your body can use 5 (v) - look at very closely 6 (n) - the air we breathe 7 (v) - to be part of something 8 (n) - a tube through which liquid travels in a living thing 9 (n) - a body part that has a certain job to do 10 the smallest working part of a living thing 4 2 7 8 1 9 5 10