Solved: Exercise 6: Seminiferous Tubule 1. Label the st | Courses Archive Exercise 6: Seminiferous Tubule 1. Label the structures in the section of the seminiferous tubule wall in Figure 12.8 by filling in the blanks following the figure. Testis Seminiferous tubules Spermatozon Lumen of the seminiferous tubule 4 100 Hotdoor LC Melonis 2 Spermatogonium Tubule