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)
1 There are 4 main types of tissue namely: epithelial, connective, muscle and nervous tissues. 2  Epithelial tissues form the skin and line the gut, respiratory tract, bladder etc. 3  Connective tissues form tendons, ligaments, adipose tissue, blood, cartilage and bone, and are found in the dermis of the skin. Epithelial tissues form the skin and line the gut, respiratory tract, bladder etc. 2  Connective tissues form tendons, ligaments, adipose tissue, blood, cartilage and bone, and are found in the dermis of the skin. 3  Muscular tissues contract and consist of 3 types: smooth, skeletal and cardiac.