The monocrine gland is one of the most common types of glands in insects. It plays an important role in the production of hormones and other biologically active substances that are necessary for the normal functioning of the body.
The monocrine gland includes secretory cells located around blood vessels. Each cell produces one type of hormone. Monocrine gland hormones can be regulated by intestinal neurosecretion.
An example of this type of gland is the thymus in birds. The main hormone in this organ is a thymic humoral stimulus. It regulates the reproduction, growth and development of muscle mass.
An important point is also that the hormones of the monocrine gland can interact with each other. Some hormones, for example, the hormones of the anterior monocrine gland, are able to influence the level of hormones of the posterior monocrine gland. For example, stress can increase levels of the pituitary thyroid hormone, which stimulates the anterior gland and increases its activity.