1. Aspen Gothard Wayne Figg 1/13/2014 7 th

2.  The Male Gonads are located behind the penis in the skin pouch called the scrotum.

3.  Male gonads produce the sex hormones in the body  Male sex hormones are called testosterone  They stimulate the formation of sperms in the seminiferous tubules.

4.  Develops reproductive tissues  Increases muscle size, bone mass, and body hair

5.  It sustains spermatogenesis  maintains muscle bulk  maintains secondary sex characteristics  aids in erectile function.

6.  Clomiphene citrate stimulates gonadotropin production  In the adult it suppresses urinary follicle stimulating hormone (FSH) excretion and plasma testosterone concentration in prepubertal children  Such results indicate that feedback between gonad and hypothalamus is operative and highly sensitive in prepubertal humans.

7.  The gonads are responsible for the production of steroid hormones, such as testosterone  However, calcitonin inhibits testosterone

8.  Hypogonadism is a medical term which describes a diminished functional activity of the gonads  May result in diminished sex hormone biosynthesis and impaired gamete production and/or regulation  Causes infertility

9.  The way in which testosterone deficiency is treated depends on whether the treatment aims to improve fertility, sexual functioning, or both.  Gonadotrophin therapy – that is, treatment with hormones which stimulate the reproductive organs – has been shown to be effective in improving fertility in cases of secondary hypogonadism.

10.  Elephantitis of the testicles  http://www.youtube.com/watch?v=HUYwGDen mf0 http://www.youtube.com/watch?v=HUYwGDen mf0  http://www.youtube.com/watch?v=dyNkqfDLY5 o http://www.youtube.com/watch?v=dyNkqfDLY5 o

11.  http://genesdev.cshlp.org/content/14/24/3075.full http://genesdev.cshlp.org/content/14/24/3075.full  http://www.tutorvista.com/content/biology/biology- iv/chemical-coordination-animals/gonads.php#testes http://www.tutorvista.com/content/biology/biology- iv/chemical-coordination-animals/gonads.php#testes  http://www.medscape.com/viewarticle/543997_2 http://www.medscape.com/viewarticle/543997_2  http://www.researchgate.net/publication/18268526_C hanging_sensitivity_of_the_pubertal_gonadal_hypothala mic_feedback_mechanism_in_man http://www.researchgate.net/publication/18268526_C hanging_sensitivity_of_the_pubertal_gonadal_hypothala mic_feedback_mechanism_in_man  https://www.boundless.com/biology/the-endocrine- system/endocrine-glands/pineal-gland-and-gonads/ https://www.boundless.com/biology/the-endocrine- system/endocrine-glands/pineal-gland-and-gonads/  http://www.virtualmedicalcentre.com/diseases/testoste rone-deficiency-primary-hypogonadism-and- secondaryhypogonadotrophic-hypogonadism/374 http://www.virtualmedicalcentre.com/diseases/testoste rone-deficiency-primary-hypogonadism-and- secondaryhypogonadotrophic-hypogonadism/374