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MALE REPRODUCTIVE SYSTEM The male reproductive system produces male reproductive cells (spermatozoa), meant for introducing them into the oviduct of the female for fertilization of the egg and secondary for producing a hormone which influences sex characters. Male reproductive system consists of: 1. Testes 2. Vas differences 3. Papillae or rudimentary copulatory organ 1. Testes The testes are two small ovoid organs situated at the anterior end of the kidneys in the dorsal body wall. The left testis is usually larger than the right One. Each testis consists of a larger no. of slender tubes, called seminiferous tubules, from the lining of which the reproductive cells are given off. The spermatozoa are then carried out of the testis by the seminal fluid, which also produce in the testis. Millions are produced and expelled in the seminal fluid. 2. Vas deferens The vas deferens are two tubes pursuing a wavy course from the testis to the cloaca.They convey spermatozoa and seminal fluid from the testis to cloaca. 3. Papillae The papillae of the male is located on the medium ventral portion of one of the transverse folds of cloaca.At the time of mating sperms are introduced by the papillae into the oviduct in the cloacal wall of the female. Cloaca Enlarged section of the alimentary canal that connects the large intestine and vent is called the cloaca.The vent is the external opening of the cloaca.Sperms from the testis,faecal material from the large intestine and urine from the kidneys are pass through the cloacal and are eliminated through the vent.