Question 1 :

-Circulatory

Question 2:

-Oesophagus

Question 3 :

-Veins

Question 4:

-Skull

Question 5 :

-Kidneys

Question 6:

-Pulmonary

Question 7:

-Scapula

Question 8:

-Leg

Question 9:

-Carbon dioxide

Question 10:

-Large intestine

1.C 2.E 3.Y 4.i 5.O 6.V 7.S 8.A 9.P 10.U 11.N 12.R 13.L 14.K 15.D 16.T 17.K 18.G

Puzzle:

Every ten years your skeleton is regenerated !