What Is Coiling in Gastropods?

Coiling in its simplest form is planispiral, where the shell + visceral mass ensemble coils around a point. The most frequent form of coiling in gastropods, however, is helicoidal, with asymmetrical coiling of the shell around a line producing a skewed turbinate coil.

Why are gastropods coiled?

Tight coiling with whorl overlap is the most frequent mode of shell coil- ing in gastropods. A new model of shell growth, the "head-foot guidance model", implies that the contact of the head-foot mass with the mantle edge plays the main role in producing tight coiling.

What is the difference between torsion and coiling?

As nouns the difference between torsion and coiling

is that torsion is twist, twisting while coiling is the pattern or motion of something that coils.

Alexander Ross

Alexander Ross

Gaming, Esports & Interactive Media Writer

Alexander Ross has covered the video game industry for a decade, writing deep dives on game design, esports tournaments, VR developments, and gaming culture.