File:Sidocoga malignacus-AB00C5C9DB988C0481485A8DA07DF808.png

Microtubules are part of the cell's cytoskeleton. Their function is to provide transport pathways to proteins and help amoeba-like organisms to stretch and move as well as several other metabolic functions. Here, even though, S.malignacus have consistent protein membrane, microtubules are still present due to their assistance in helping microvilli swaying side to side. This swaying is caused by microtubules sliding against each other.

The needle-like microvilli ring at the top as well as the second microvilli ring is also connected to microtubules. However the first microvilli ring have microfilament knots connecting them to microtubules. Microfilaments support the cell wall and make it more elastic. These knots ensure that upper microvilli have two modes: relaxed and stiffened. When microfilament knots contract around microvilli and microtubules, it allows microvilli to switch positions. When knots are relaxed, upper microvilli sway just like ordinary villi.

The second microvilli ring allows S.malignacus to be aware when it is deep enough, otherwise it would get stuck and injured by it's own digestive enzymes, oddly enough (since the presence of L.cytosol regenerative enzymes would exhaust S.malignacus reserves). That's why S.malignacus need to free itself and retreat when it has finished feeding.