C 19 H 28 02 - Testis: An organ produces spermatozoa male reproductive cells.

Testis is an an organ which produces spermatozoa (male reproductive cells).

DHT binds with higher affinity to androgen receptors than testosterone, activating gene expression more efficiently. In addition, testosterone is irreversibly converted to  estradiol by the enzyme complex aromatase, particularly in the liver and adipose tissue. Testosterone and DHT promote the development and maintenance of male sex characteristics related to the internal and external genitalia, skeletal muscle, and hair follicles; estradiol promotes epiphyseal maturation and bone mineralization. Due to rapid metabolism by the liver, therapeutic testosterone is generally administered as an ester derivative......>     This information source is by:  NCB home page ...  U.S.  NAtural  Library  of Medicine. National  Center for Biotechnology Information.  Note for internal trouble:  The response to adrenocorticotropic hormone stimulation suggests that enzymes in the adrenal glands and testes may be affected independently. Our findings support the hypothesis that hypospadias is the result of fetal endocrinopathy.