Galileo Galilei was a physicist, an astronomer, and a mathematician. He improved the telescope, and was the first person to use it to study the skies. He was the first to see the four moons of Jupiter and the first to discover the rings of Saturn. he invented the rings of saturn and he dicoverd the comuter.xx happy reading.e improved the telescope, and was the first person to use it to study the skies. He was the first to see the four moons of Jupiter and the first to discover the rings of Saturn. he invented the rings of saturn and he dicoverd the comuter. xx happy reading.
In male mammals, a double negative feedback loop has evolved allowing separate regulation of testosterone biosynthesis and sperm production. A dual system allows an organism to better conserve energy while still remaining optimally functional.
Even the physiological response to the hormone can feedback and affect target organs. This whole feedback loop is negative, but it can also be ostive. So, if hormone levels drop, or if stress increases, or diet changes, there will be a change in physiological response that will make feedback positive or negative to affect the hypothalamus. How do feedback mechanisms control hormone production?