This is also heterogeneous, i.e. a composite of carbon-poor iron and cementite. Going to very fast cooling (quenching) will result in a single-phase (not composite) material called martensite. Here the carbon doesn't have time to exit the iron, and this martensite phase is very hard, but also normally too brittle.
Epithelial tissue - to cover the inner and outer surfaces of the stomach The stomach is one of the organs that form the digestive system. The stomach contains various tissues, and each tissue is made of a particular type of cell. In order of increasing size and complexity: cells â tissues â organ (the stomach) â organ system (the digestive system)
The stomach epithelium is simple columnar. This portion of the stomach is from the Cardiac region and is mostly made up of surface mucous cells. Thus, the epithelium is largely protective. The next slide you will examine is the FUNDIC region or BODY. This part of the stomach contains specialized cells for digestion.