posted by kbarnes .
Hormones that regulate the development and functioning of reproductive organs are called ________ hormones.
Hormones are grouped into three classes based on their structure:
Steroids are lipids derived from cholesterol. Testosterone is the male sex hormone. Estradiol, similar in structure to testosterone, is responsible for many female sex characteristics. Steroid hormones are secreted by the gonads, adrenal cortex, and placenta.