The gall bladder is composed of the following major tissues.
The epithelium This is the layer found innermost in the gall bladder.
Submucosa This is a thin layer of tissue composed of loose connective tissue.
Smooth Muscular tissue. This tissue forms a muscular layer in transverse, oblique and longitudinal directions and these muscular tissue contracts to expel bile from the gall bladder.
Perimuscular tissue This is a tissue that is fibrous in nature and is a connective tissue.
Serosa This is quite a thick layer of tissue. It covers the gall bladder's outer surface . It contains lymphatic network, nerves and large blood vessels .Where it is connected to the liver it is known as adventia. In the region that is not attached there is found an outer layer of loose connective tissue (serosa) and another kind of tissue known as mesothelium.
