ducts
51Duct (HVAC) — A round galvanized steel duct connecting to a typical diffuser Fire resistance rated …
52Development of the reproductive system — The development of the reproductive system is a part of prenatal development, and concerns the sex organs. It is a part of the stages of sexual differentiation. Because its location to a large extent overlaps the urinary system, the development… …
53Common utility duct — A common utility duct, sometimes called a common utility conduit, is any structure – above, on, or below ground – that carries more than two types of public utility lines. However, the phrase often refers specifically to underground utility… …
54reproductive system, animal — Introduction any of the organ systems by which animals reproduce. The role of reproduction is to provide for the continued existence of a species; it is the process by which living organisms duplicate themselves. Animals compete with… …
55reproductive system, human — Organ system by which humans reproduce. In females, the ovaries sit near the openings of the fallopian tubes, which carry eggs from the ovaries to the uterus. The cervix extends from the lower end of the uterus into the vagina, whose opening, as… …
56Collecting duct system — Scheme of renal tubule and its vascular supply. Latin tubulus renalis colligens Gray s …
57Cholangiocarcinoma — Classification and external resources Micrograph of an intrahepatic cholangiocarcinoma (right of image) adjacent to benign hepatocytes (left of image). H E stain …
58human embryology — ▪ biology Introduction the process encompassing the period from the formation of an embryo, through the development of a fetus, to birth. The human body, like that of most animals, develops from a single cell produced by the union of… …
59animal development — Introduction the processes that lead eventually to the formation of a new animal starting from cells derived from one or more parent individuals. Development thus occurs following the process by which a new generation of organisms is produced by …
60digestive system disease — Introduction any of the diseases that affect the human digestive tract. Such disorders may affect the esophagus, stomach, small intestine, large intestine (colon), pancreas, liver, or biliary tract. A prevalent disorder of the digestive… …
