●Testis, plural testes, also called testicle, in animals, the organ that produces sperm, the male reproductive cell, and androgens, the male hormones. In humans the testes occur as a pair of oval-shaped organs. They are contained within the scrotal sac, which is located directly behind the penis and in front of the anus.
●OVARY IS a female reproductive organ in which ova or eggs are produced, present in humans and other vertebrates as a pair.
●Calcitonin-a hormone secreted by the thyroid that has the effect of lowering blood calcium.
●Thyroxine-the main hormone produced by the thyroid gland, acting to increase metabolic rate and so regulating growth and development.
●Uterus-the organ in the lower body of a woman or female mammal where offspring are conceived and in which they gestate before birth; the womb.
●Cowper's gland-two small yellowish glands near the prostate that secrete a mucous substance into the urethra during sexual stimulation