Where is human growth hormone produced in the body?

Human growth hormone (HGH) is produced in the pituitary gland, which is located at the base of the brain. This gland plays a crucial role in regulating various bodily functions, including growth, metabolism, and body composition. HGH specifically stimulates growth in cells and tissues, promoting the growth of muscle and bone, and aids in the regulation of body composition by influencing the way the body uses fats and sugars.

The other options provided do not produce growth hormone. The liver plays a significant role in metabolism and detoxification but does not synthesize HGH. The adrenal glands are responsible for producing hormones like cortisol and adrenaline, which are involved in stress response and metabolic regulation. The pancreas primarily regulates blood sugar levels by releasing insulin and glucagon, not hormones related to growth. Therefore, the pituitary gland is the correct answer as it is the sole source of human growth hormone in the body.