We will complete tomorrow a chapter and some topics about reproduction .This chapter is very constructive chapter, and under the chapter human reproduction is , first topic is male reproductive part and second is female reproductive, this is the main heading for the chapter, and first we will complete male reproductive part, in male reproductive system is main part that is testis, and testis are one pair, and testis are located by below the abdominal, because body temperature is high, this reason is located buy abdominal cavity, because sperm formated by low temperature comparative body temperature,  and sartoli cells it's a provide nourishment for sperm , and one gland it's a provide basicity for sperm and by penis path through t out side of tha body , and one time eject millions of spam ,  and next is a female reproductive system which is the very complicated female reproductive system one pair of ovary and celebrate you uterus ,