What are Ductless Glands?

Glands refer to the tissues of the animal body and / or human body that can produce special substances. This substance is mainly hormones (formerly known as hormones), which are transported to the body or exocrine glands through blood. There are many ways to classify "glands". They can be classified according to the location and function (function) of the tissue. The anatomy and physiology are not the same.

Glands

Gland refers to the tissues of the animal body and / or human body that can produce special substances, which are mainly hormones (formerly known as

-Endocrine and exocrine glands

Glands are divided into endocrine glands, exocrine glands, and also neuroendocrine cells.

There are unicellular glands as well as multicellular ones, and the exocrine glands are mostly ducted.

Endocrine glands are generally a group of cells that have no special shape and can only be distinguished after staining.

The hypothalamus has neuroendocrine cells, the neck has thyroid, parathyroid glands, the chest has thymus, and the digestive glands that secrete gastric juice and pancreatic juice are in the gastrointestinal tract, the adrenal glands are on the upper side of the kidney, and the prostate is too much Islets that secrete insulin and glucagon and somatostatin are small clusters of cells next to the pancreas

Small ones with only a few cells and large ones like the pancreas have formed independent organs.

The secretion of gastric juice is the main cells, parietal cells, and cervical mucus cells scattered on the inner wall of the stomach.

The endocrine glands secrete hormones that regulate the body's metabolism and are only transmitted in human blood without flowing out of the body. Exocrine refers to secretions such as sweat glands and lacrimal glands that can be excreted from the body through a catheter.