Body Structure of a Terrestrial Snail:
1: Shell; 2: Digestion gland; 3: Lung; 4: Anus; 5: Respiratory hole; 6: Eye; 7: Tentacle; 8: Cerebral
ganglion; 9: Salivary duct; 10: Mouth; 11: Oesophagus; 12:Salivary gland; 13: Genital pore; 14: Pe-
nis; 15: Vagina; 16: Mucus glands; 17: Oviduct; 18: Dart sac; 19: Foot; 20: Stomach; 21: Kidney;
22: Mantle; 23: Heart; 24: Spermioduct (Vas deferens). Source: Wikipedia.