Page 179 - Ultimate Visual Dictionary (DK)
P. 179
MOLLUSKS
EXTERNAL FEATURES Shell Growth line
OF A SNAIL
Eye Apex of shell
Posterior
tentacle
Collar
INTERNAL ANATOMY
Digestive gland OF A SNAIL
Shell
Heart
Head Foot Ovotestis
Lung
Anterior Hermaphrodite duct Salivary gland
tentacle
Albumen gland Crop
Mucous gland
Copulatory bursa
Dart sac
Spermatheca
Cerebral
ganglion
Kidney
EXTERNAL FEATURES Stomach
OF AN OCTOPUS
Ureter
Spermoviduct
Eye with horizontal iris
Siphon (funnel)
Flagellum
Excretory Anus Penis Radula
pore
Vagina Gonopore Mouth
Esophagus Pedal gland
Visceral hump
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