PATHOLOGY

Detailed explanation-1: -Endocrine glands make chemicals called hormones and pass them straight into the bloodstream. Hormones can be thought of as chemical messages. From the blood stream, the hormones communicate with the body by heading towards their target cell to bring about a particular change or effect to that cell.

Detailed explanation-2: -The hormones travel in the blood circulation to reach their target sites (cells, tissues or organs) they can also travel in the lymphatic system when they are destroyed in the liver and removed by the kidneys.

Detailed explanation-3: -To achieve this control, many bodily functions are regulated not by a single hormone but by several hormones that regulate each other (see figure 2). For example, for many hormone systems, the hypothalamus secretes so-called releasing hormones, which are transported via the blood to the pituitary gland.