In college, I should not only learn methods, but also learn a serious attitude. Both molluscs and arthropods are in their own schools these two days. There are few students and no special experimenters. These courses are usually based on models. Now there are professional teachers to follow up the experiments, and there are special funds to buy grasshopper leeches for mollusk classes. Many students may not have mastered anatomy, but they will definitely remember taking such a class in the deep memory.

Anatomical SINONOVACULA constricta

SINONOVACULA SINONOVACULA belongs to mollusk. It has two calcareous shells of similar size outside, so it is called bivalve.

When we open the shell, we see that the soft body surface of SINONOVACULA constricta is covered with a fleshy membrane, which is called the mantle, and the substances secreted by the mantle form a hard shell.

The front end of SINONOVACULA constricta's body is its powerful foot, which can move slowly with its feet.

At the back end of SINONOVACULA constricta, we can see two adjacent round pipes, namely its water inlet pipe and water outlet pipe. SINONOVACULA SINONOVACULA can ingest food and excrete food residues in the process of inhaling and discharging water.

The part referred to in the figure is the gill of freshwater sandfly, which is the organ for gas exchange of freshwater sandfly.