nodal head

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• Nodal signaling — is a signal transduction pathway that is important in pattern formation and differentiation during embryo development.[1] The nodal family of proteins, a subset of the transforming growth factor beta (TGFβ) superfamily, is responsible for… …   Wikipedia

• Panoramic tripod head — A panoramic tripod head is a piece of photographic equipment, mounting to a tripod, which allows photographers to shoot a sequence of images around the entrance pupil of a lens to produce a panorama. The primary function of the panoramic head is… …   Wikipedia

• eye, human — ▪ anatomy Introduction  specialized sense organ capable of receiving visual images, which are then carried to the brain. Anatomy of the visual apparatus Structures auxiliary to the eye The orbit       The eye is protected from mechanical injury… …   Universalium

• branch — An offshoot; in anatomy, one of the primary divisions of a nerve or blood vessel. A b.. See ramus, artery, nerve, vein. SYN: ramus (1) [TA]. accessory meningeal b. SYN: pterygomeningeal artery …   Medical dictionary

• Regional specification — In the field of developmental biology, regional specification is the process by which different areas are identified in the development of the early embryo. The process by which the cells become specified differs between organisms. Contents 1… …   Wikipedia

• Vibraphone — Infobox instrument name=Vibraphone names=Vibraharp, Vibes image capt=A typical vibraphone color=#FFEC8B classification=Percussion instrument (Idiophone) range= related= musicians= builders= articles=The vibraphone, sometimes called the vibraharp… …   Wikipedia

• chemical bonding — ▪ chemistry Introduction       any of the interactions that account for the association of atoms into molecules, ions, crystals, and other stable species that make up the familiar substances of the everyday world. When atoms approach one another …   Universalium

• Artery — A vessel that carries blood that is high in oxygen content away from the heart to the farthest reaches of the body. Since blood in arteries is usually full of oxygen, the hemoglobin in the red blood cells is oxygenated. The resultant form of… …   Medical dictionary

• Neck dissection — Intervention ICD 9 CM 40.4 MeSH …   Wikipedia

• Direct stiffness method — As one of the methods of structural analysis, the direct stiffness method (DSM), also known as the displacement method or matrix stiffness method, is particularly suited for computer automated analysis of complex structures including the… …   Wikipedia

• Enhancer (genetics) — In genetics, an enhancer is a short region of DNA that can be bound with proteins (namely, the trans acting factors, much like a set of transcription factors) to enhance transcription levels of genes (hence the name) in a gene cluster. While… …   Wikipedia