Endocrine disruptor own hormones. These regulation effects are intertwined so that a hormone that is level affected by another hormone in turn affects the levels of multiple other hormones produced by the body itself, leaving no endogenous hormones or traits affected by them unaffected by endocrine disruptors. Most toxicants, including endocrine disruptors, have been claimed to follow a U-shaped dose response curve. This means that very low and very high levels have more effects than mid-level exposure to a toxicant. Endocrine disrupting effects have been noted in animals exposed to environmentally relevant levels of some chemicals. For example, a common flame retardant,
Gastric glands the fundus and body of the stomach. They are simple almost straight tubes, two or more of which open into a single duct. "Oxyntic" means acid-secreting and they secrete hydrochloric acid (HCl) and intrinsic factor. The pyloric glands are located in the antrum of the pylorus. They secrete gastrin produced by their G cells. There are millions of gastric pits in the gastric mucosa and their necessary narrowness determines the tubular form of the gastric gland. More than one tube allows for the accommodation of more than one cell type. The form of each gastric gland is similar; they are