Answer the following question given this paragraph: 

Figure 33.3 Apodemes are ingrowths on arthropod exoskeletons to which muscles attach. The apodemes on this crab leg are located above and below the fulcrum of the claw. Contraction of muscles attached to the apodemes pulls the claw closed.


Q: What are ingrowths on arthropod exoskeletons to which muscles attach?

 Choices:

- joints

- pores

- rods

- apodemes

A:
apodemes
