1 Sulfur Crystals: History and its Uses Sulfur is a chemical element that is widely abundant in nature. 2  It is classified as a multivalent non-metal. 3  Sulfur's symbol is S and its atomic number 16.
Question and answer. The __________ and __________ are the glands that stimulate reproductive cycles. A. testes. . . thyroid B. testes. . . ovaries C. ovaries. . . thyroid D. ovaries. . . thymus. The testes and ovaries are the glands that stimulate reproductive cycles. Expert answered| emdjay23 |Points 2484|.
The pituitary gland produces LH (luteinising hormone) and FSH (follicle stimulating hormone) which stimulate the gonads in two ways: FSH stimulates growth of the sex cells, the ovarian follicles in a woman, the seminiferous tubules and early stages of sperm production in a man.