Reproductive Hormone Unit Objectives: By the end of this unit, studentswill be able to…- Define and describe each of the following: a. Estrous Cycle b. EndocrineGland c. Target Tissue d. Estrus e. Endocrine System- Summarize how a hormone “knows” which tissues and organs to activate.- Explain why two messenger systems are needed in the bodies of animals.- Identify, describe, and explain the function of GnRH, FSH, LH, Estradiol,Progesterone, and PGF2α.- Identify GnRH, FSH, LH, Estradiol, Progesterone, and PGF2α based on whenthe reach their peak levels in the estrous cycle.- Explain the purpose, mechanism, and hormonal components of Lutalyse,Ovsynch, CIDR, and MGA.- Summarize and explain each of the following stages of the estrous cycle:a. Estrus b. Metestrus c. Diestrus d. Proestrus- Explain the difference between a paracrine and endocrine hormone.