GENERAL HISTOLOGY

Detailed explanation-1: -Endocrine glands secrete hormones straight into the bloodstream. Hormones help to control many body functions, such as growth, repair and reproduction. The endocrine system involves many organ systems and hormones, many of which are still being investigated and understood.

Detailed explanation-2: -On the other hand, endocrine glands secrete their substances directly into your bloodstream. They’re called ductless glands. Endocrine glands are part of your endocrine system, and they secrete hormones. Examples of endocrine glands include your pituitary gland, thyroid gland and adrenal glands.

Detailed explanation-3: -Endocrine glands secrete directly into the bloodstream, not through a duct system. Thus, endocrine glands are highly vascularized with many small capillaries among the nests of endocrine cells.

Detailed explanation-4: -Hormones are molecules that are produced by endocrine glands, including the hypothalamus, pituitary gland, adrenal glands, gonads, (i.e., testes and ovaries), thyroid gland, parathyroid glands, and pancreas (see figure 1).