The reproductive system...
The reproductive system also known as genital system is a system that enables people to produce offspring. Many non-living substances like hormones, pheromones and fluids are also essential accessories to the reproductive system.
Yes, they do.
The eiodidymis is part of the male reproductive system
Sperm is part of the reproductive system, specifically the male reproductive system.
Endocrine
The penis belongs to the reproductive system. It plays a key role in sexual reproduction by delivering sperm to the female reproductive system.
You answered it yourself; it is the reproductive system.
reproductive system
reproductive system male
nothing
Gills