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|.
Gonadotropes, primarily luteinising hormone (LH) secreted from the anterior pituitary stimulates the ovulation cycle in female mammals, whilst in the males, LH stimulates the synthesis of androgen which drives the ongoing will to mate together with a constant production of sperm.