👉 The endocranium is a term used to describe the structures that make up the endocrine system of an organism. It includes the bones, muscles, and glands within the endoderm layer of the body. Endocrine systems are responsible for producing hormones, which are essential for maintaining the balance of bodily functions. The endocrine system consists of several types of glands, such as the thyroid gland, parathyroid, adrenal, pituitary, and pineal, that secrete their own hormones