constricted node

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• neck — 1. Part of body by which the head is connected to the trunk : it extends from the base of the cranium to the top of the shoulders. 2. In anatomy, any constricted portion having a fancied resemblance to the n. of an animal. 3. The germinative… …   Medical dictionary

• Nodes of Ranvier — are known as the gaps (about 1 micrometer in diameter) formed between myelin sheath cells along axons or nerve fibers. OverviewSeveral vertebrate axons are surrounded by a myelin sheath allowing rapid and efficient saltatory propagation of action …   Wikipedia

• Myelin sheath gap — Drawing of a peripheral nerve axon (labeled axis cylinder ), showing a node of Ranvier along with other features …   Wikipedia

• cardiovascular disease — Introduction       any of the diseases, whether congenital or acquired, of the heart and blood vessels (blood vessel). Among the most important are atherosclerosis, rheumatic heart disease, and vascular inflammation. Cardiovascular diseases are a …   Universalium

• animal 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 …   Universalium

• Private finance initiative — Part of the Politics series on Neoliberalism …   Wikipedia

• Apostasy in Islam — (Arabic: ارتداد, irtidād or ridda‎) is commonly defined in Islam as the rejection in word or deed of one s former religion (apostasy) by a person who was previously a follower of Islam. The Qur an itself does not prescribe any earthly punishment… …   Wikipedia

• Anura — ▪ amphibian order Introduction also called  Salientia    one of the major extant orders of the class Amphibia (amphibian). It includes the frogs (frog) and toads (toad), which, because of their wide distribution, are known by most people around… …   Universalium

• Pancreas — For other uses, see Pancreas (disambiguation). Pancreas the pancreas …   Wikipedia

• 243 Ida — Galileo image of 243 Ida. The tiny dot to the right is its moon, Dactyl. Discovery[1] and designation …   Wikipedia

• Larynx — For the remotely piloted vehicle, see Larynx (unmanned aircraft). Larynx Anatomy of the larynx, anterolateral view …   Wikipedia