valve retractor

См. также в других словарях:

• bivalve — bivalvular /buy val vyeuh leuhr/, adj. /buy valv /, n. 1. Also called lamellibranch. Zool. any mollusk, as the oyster, clam, scallop, or mussel, of the class Bivalvia, having two shells hinged together, a soft body, and lamellate gills. adj. 2.… …   Universalium

• reproductive 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… …   Universalium

• Cardiac surgery — Intervention Two cardiac surgeons performing a cardiac surgery known as coronary artery bypass surgery. Note the use of a steel retractor to forcefully maintain the exposure of the patient s heart …   Wikipedia

• Inventions in medieval Islam — A significant number of inventions were developed in the medieval Islamic world, a geopolitical region that has at various times extended from Al Andalus and Africa in the west to the Indian subcontinent and Malay Archipelago in the east.… …   Wikipedia

• List of inventors — This is a list of inventors. See also: List of scientists, Timeline of invention, List of inventions named after people, List of inventors killed by their own inventions, and . Alphabetical list compactTOC NOTOC A * Vitaly Mikhaylovich Abalakov,… …   Wikipedia

• Bivalvia — Taxobox name = Bivalvia fossil range = Cambrian Recent image width = 250px image caption = Acephala from Ernst Haeckel s Kunstformen der Natur , 1904 regnum = Animalia phylum = Mollusca classis = Bivalvia classis authority = Linnaeus, 1758… …   Wikipedia

• Timeline of historic inventions — The timeline of historic inventions is a chronological list of particularly important or significant technological inventions. Note: Dates for inventions are often controversial. Inventions are often invented by several inventors around the same… …   Wikipedia

• Timeline of Islamic science and engineering — This timeline of Islamic science and engineering covers the general development of science and technology in the Islamic world during the Islamic Golden Age, usually dated from the 7th to 16th centuries.From the 17th century onwards, the advances …   Wikipedia

• Bivalve shell — The bivalve shell is one kind of seashell, and in life it is composed of two parts, two valves. The bivalve shell is part of the body, the exoskeleton, of a bivalve mollusk. Bivalves are a common part of the marine fauna worldwide (scallops,… …   Wikipedia

• Pallium (anatomy) — This article refers to the anatomical structure called a pallium . For the religious garment, click here. In the anatomy of animals, the pallium is related to...(1) The evolutionary precedent of the cerebrum.:* The human pallium ( cloak in Latin) …   Wikipedia

• History of Medicine —     History of Medicine     † Catholic Encyclopedia ► History of Medicine     The history of medical science, considered as a part of the general history of civilization, should logically begin in Mesopotamia, where tradition and philological… …   Catholic encyclopedia