Development of the Testis

Basic Anatomy of the Testicle The orchis (singular) or testicles (plural) is the manful sex gland. The word ball means witness in Latin, and its application to the male gonad originates from ancient Rome, men pickings an oath placed integrity hand on their fork (Silverthorn, 2001). The testes are contained in a pouch of skin termed the scrotum (Fig. 3a), find outside of the personate because they train a temperature 2 - 3 degrees Celsius lower than the rest of the body for gametogenesis. The role of the junky is to make sperm and masculine hormones, the androgens (e.g. Testosterone). The common self-aggrandising male has a pair of the oval mold organs, separately weighing close 25 grams and being 4 -5 centimetres in length and 2-3 centimetres in diameter (Silverthorn, 2001). severally testis is support in the scrotum by a tubular structure called the spermous cord (Fig.1a). Each cord is sheathed in colligation tissue and contains a network of arteries (testicular ar teries), veins, nerves, and the first section of the ductus deferens, with which sperm pass in the process of ejaculation. The cords blossom from the testes to the inguinal rings (openings at the level of the bladder). A fibrous shift called the tunica albuginea covers each(prenominal) testis (Fig.2).

The tunica albuginea also has extensions into each testis that behave as partial partitions to divide the testis into approximately 250 compartments, or lobules. Within each lobe are 3-10 set coiled tubules, called seminiferous tubules, which house the testicular machinery (Fig 3b). If uncoiled, these tubules would stretch approximately a land mile in length, expla! ining why they account for 90% of the weight of an adult testicle (Rosen, 1998). Both the partitions between the lobes and the seminiferous tubules fuse in one area near the quarter of each testis to form a relatively... If you want to lay out a full essay, order it on our website: OrderCustomPaper.com

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