Constipation can be due to mild to moderate conditions, such as a poor diet, pregnancy or hemorrhoids. Serious and life-threatening causes of constipation include colon cancer and bowel obstruction. In some cases, constipation may be brief, such as may occur when you delay having a bowel movement when the urge is felt.
enÂ·doÂ·therm. (Änâ²dÉ-thÃ»rmâ²) n. An organism that generates heat to maintain its body temperature, typically above the temperature of its surroundings. endotherm.
endothelium. n, pl-lia (-lÉªÉ). 1. (Anatomy) a tissue consisting of a single layer of cells that lines the blood and lymph vessels, heart, and some other cavities. [C19: New Latin, from endo- + -thelium, from Greek thÄlÄ nipple].