Name the structure indicated by arrow 13:

Name the structure indicated by arrow 24:

*Use the following picture for #26-27. Name the structure indicated by arrow 26:

Name the organ indicated by arrow 12:  

Name the structure indicated by arrow 20:  

Name the organ indicated by arrow 6:  

Name the structure indicated by arrow 27:  

Name the structure indicated by arrow 23:  

Name the structure indicated by arrow 1:

Which part of the five-part classical oration is where a writer engages the strongest version of the opposing argument?