Ectopic pregnancy results from a delay in the passage of the fertilized ovum through Fallopian tube. This delay can result from anatomical abnormalities of the tubes, such as constriction and false passage formation (e.g. diverticulum), or from tubal dysfunction as altered contractility or abnormal ciliary activity.
The EDCA is an agreement between the Philippines and the United States which is envisioned to advance the implementation of the PH-US Mutual Defense Treaty (MDT).
Ethylenediaminetetraacetic acid, widely abbreviated as EDTA (for other names, see Table), is an aminopolycarboxylic acid and a colourless, water-soluble solid.Its conjugate base is named ethylenediaminetetraacetate. It is widely used to dissolve limescale.oday, EDTA is mainly synthesised from ethylenediamine (1,2-diaminoethane), formaldehyde, and sodium cyanide. This route yields the sodium salt, which can be converted in a subsequent step into the acid forms: