The next step in diagnosis is a 12 lead ECG which can be performed in the doctorsâ office over a short period of time; however this is often non-conclusive in diagnosis because it is not very sensitive and there is only a small chance of a premature ventricular contraction occurring in the short period of time.
Microform is a general term for any material that contains a small image or microreproduction of a document. These document images are usually found on film, however some older formats used cardboard. There are two common film formats: microfilm and microfiche. Microfilm is a roll of film.Microfiche is a flat sheet of film. Since the images are so small, special readers/scanners are used to view the documents.hese document images are usually found on film, however some older formats used cardboard. There are two common film formats: microfilm and microfiche. Microfilm is a roll of film. Microfiche is a flat sheet of film.
Microvilli are the minute finger- like elongated projections of the plasma membrane which exhibit a core of thin microfilaments. These microfilaments are held together to form bundles by cross-linking proteins known as villin and fimbrin. The main function of the microvilli is the absorption of certain substances. Cells produce microvilli, mainly, to increase the surface area for absorption (intestine surface), to transport absorbed materials, and to participate in the digestion of carbohydrates. In general, the length of a microvillus is about 0.5 to 1.0 Âµm and the diameter is about 0.1 Âµm.