Portola Valley is one of the forty wealthiest towns in the United States, with a median household income of $244,771 a year. Within the State of California, Portola Valley is ranked as the sixth wealthiest place. The zip code 94028, which encompasses the whole of Portola Valley, has the 9th most expensive housing prices within the country according to Forbes Magazine 2013.
The male gonads are the testes and the female gonads are the ovaries. These reproductive system organs are necessary for sexual reproduction as they are responsible for the production of male and female gametes.
The male reproductive system consists of sexual organs, accessory glands, and a series of duct systems that provide a pathway for fertile sperm cells to exit the body. 1  Penis - Main organ involved in sexual intercourse. 2  Testes - Male primary reproductive structures that produce male gametes (sperm) and sex hormones.