Iron is one of the minerals in the human body. It is one of the components of hemoglobin, the substance in red blood cells that helps blood carry oxygen throughout the body. If you do not have enough iron, your body cannot make hemoglobin, and you may develop anemia. blood loss (caused by ulcers, some cancers, and other conditions; and, in women, during monthly periods); 2  a diet that doesn't have enough iron in it; 3  taking medications that interfere with the ability of the body to absorb iron; 4  an increase in the body's need for iron (for instance, in women during pregnancy).
cauda meaning, definition, what is cauda: any structure in the body that is like a tail. Learn more.
Caudal peduncle. the narrow area of the body from the posterior (back) end of the anal fin to the base of the caudal (tail) fin. Compressed. squeezed together or narrow from side to side, flattened lateral ly.Caudal Peduncle: The part of the body which attaches the caudal (tail) fin to the body.The surgeonfish's spine s are located on the caudal peduncle. Chaetognaths: Free-swimming, carnivorous, pelagic, wormlike, plankton ic animals; arrow worms. See Arrow Worms.audal Peduncle: The part of the body which attaches the caudal (tail) fin to the body. The surgeonfish's spine s are located on the caudal peduncle. Chaetognaths: Free-swimming, carnivorous, pelagic, wormlike, plankton ic animals; arrow worms. See Arrow Worms.