What is the primary function of somatotropic hormone?

The primary function of somatotropic hormone, also known as growth hormone (GH), is to stimulate growth, particularly in bones and other tissues. This hormone plays a critical role in promoting an increase in the size of bones through the stimulation of osteoblasts, which are cells responsible for bone formation. Additionally, it encourages the growth of muscle and other soft tissues.

While somatotropic hormone does affect glucose metabolism by promoting a hyperglycemic effect, this is not its primary role. The hormone primarily targets growth processes rather than just managing blood sugar levels. Options regarding enhancing muscle contraction or regulating fluid balance do not accurately reflect the main action of somatotropic hormone, which is centered on growth and development. Therefore, the focus on stimulating growth of bone encapsulates the essence of somatotropic hormone's primary function.