Earthworm- excretory and reproductive systems

 

A    External view
B    Excretory system (nephridium)
C-D    Reproductive system
C    Lateral view
D    Dorsal view
1    Nephrostome
2    Septum
3    Ciliated tube
4    Bladder
5    Nephridiopore
6    Body wall
7    Seminal vesicle
8    Testis
9    Egg sac
10    Male opening
11    Female opening
12    Oviduct
13    Ovary
14    Sperm duct (vas deferens)
15    Opening to sperm-receiving sac
16    Sperm-receiving sac (spermatheca)