Hormone secretion is the process by which glands in the body release hormones into the bloodstream. Hormones are chemical messengers that travel through the blood to target organs and tissues, where they help regulate various bodily functions, such as growth, metabolism, and mood. Key glands involved in hormone secretion include the pituitary gland, thyroid gland, and adrenal glands. The secretion of hormones can be triggered by various factors, including changes in the body’s internal environment or signals from the nervous system. For example, when blood sugar levels rise, the pancreas secretes insulin to help lower those levels. This intricate system ensures that the body maintains balance and responds appropriately to different situations.