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BIOL212
Majors animal: External anatomy of a cephalopod (matching)
Structure | Function |
---|---|
Collar | Fleshy border separating head-foot from visceral mass (mantle) |
Eyes | Image-forming organs for detecting visual stimuli |
Siphon | Hollow tube through which water is expelled from the mantle cavity at high velocity to propel the squid through the water |
Mantle | Body tube encircling visceral mass forming a hollow chamber in which water is collected and used for propulsion |
Arms | Shorter appendages (8) used to manipulate captured prey and act as a rudder for navigating while swimming |
Tentacles | Long, extensible, prehensile appendages (2) for capturing prey |
Fins | Triangular-shaped extensions of the dorsal end of the body tube that are used for leisurely swimming and for maneuvering during locomotion |