Within mantle of squid
propulsion, respiratory, reproduction
Propulsion: mantle, body cavity is a bellow. High pressure water is "shot" out of siphon causing the squid to move in the opposite direction. Function: get away from predators.
Respiratory: breathing - take in water into body cavity. Ctenidium like lungs - take in oxygen from water
Reproduction: In in body cavity, from testis, create spermatophores. In the photo below, of a male squid, the testis is the white sac near the top of the squid. This then releases spermatozoa which float into the spermatophoric gland which then gathers the spermatozoa and put them into sacs ready to be put into a female squid. Function: reproduction.
This is an interesting case of one, or a few anatomical features collaborate to do many "jobs." What is the problem that the squid is solving? How are the systems integrated to solve that specific problem?
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