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anatomy of an octopus
anatomy of an octopus
See anatomy of an octopus in :
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ink sac
Reservoir containing an ink-producing gland; when threatened, the octopus releases the ink through the siphon into the water to hide its flight.
anus
Terminal orifice of the digestive tract enabling ejection of fecal matter.
gill
Respiratory organ located in the dorsal mantle cavity and covered with ciliated cells; muscles help to circulate water through the gills.
kidney
Organ secreting urine; it eliminates toxic substances from the body.
heart
Muscular organ helping blood to circulate.
gonad
Genital gland producing spermatozoa (sperm) or ova (eggs), depending on the sex of the mollusk.
cecum
Lateral canal located in the anterior portion of the intestine where especially a part of digestion and fermentation take place.
stomach
Dilated section of the digestive tract preceding the intestine; it receives food to be digested.
shell
Small internal calcareous structure produced by the mantle; certain species do not have shells.
dorsal mantle cavity
Chamber formed of folds of the mantle; it contains the main organs, especially the gills, and connects to the outside.
mantle muscles
Muscles contracting to force water out of the dorsal mantle cavity through the siphon and allowing the octopus to propel itself through the water.
digestive gland
Organ producing a secretion that contributes to digestion.
crop
Large sac located beyond the esophagus, where food is held before being digested in the stomach.
poison gland
Organ producing an acidic secretion that forms the venom, which the octopus injects into its prey through its beak.
beak
Corneous formation consisting of a jaw capable of crushing, and allowing the octopus to catch its prey and inject it with venom.
skull
Bony structure enclosing and protecting the brain.
brain
Main organ of the nervous system; it is located in the head.