What is the primary function of growth hormone?

• A. To regulate metabolism
• B. To stimulate growth and cell regeneration
• C. To maintain blood sugar levels
• D. To control circadian rhythms

Answer: (B)

The primary function of growth hormone is to stimulate growth and cell regeneration. This hormone, produced by the pituitary gland, plays a crucial role in the development of tissues, muscles, and bones throughout the human body. It does this by promoting protein synthesis, increasing the rate of cell division, and enhancing the utilization of fat for energy, which supports overall growth and development.

While metabolism, blood sugar levels, and circadian rhythms are influenced by various hormones, they are not the primary roles of growth hormone. Metabolism is regulated by hormones like insulin and thyroid hormones, blood sugar levels are maintained by insulin and glucagon, and circadian rhythms are primarily controlled by melatonin and cortisol. Therefore, the role of growth hormone is distinctly focused on promoting growth and enabling effective cell regeneration.