![This is blank.](https://digitalhistology.org/wp-content/themes/histology-unified/imgs/trans.png)
Gall bladder
The mucosa of the gall bladder is extensively infolded, particularly when the gall bladder is empty. Simple columnar epithelium with short microvilli lines the lumen and the infoldings. 200X
![Epithelium <p>The mucosa of the gall bladder is extensively infolded, particularly when the gall bladder is empty. Simple columnar epithelium with short microvilli lines the lumen and the infoldings. 200X</p>](https://digitalhistology.org/wp-content/uploads/2017/10/Or.Dig_.MajGl_.GB-2-1-ping.png)
Epithelium
The mucosa of the gall bladder is extensively infolded, particularly when the gall bladder is empty. Simple columnar epithelium with short microvilli lines the lumen and the infoldings. 200X
![Mucosal infoldings <p>The mucosa of the gall bladder is extensively infolded, particularly when the gall bladder is empty. Simple columnar epithelium with short microvilli lines the lumen and the infoldings. 200X</p>](https://digitalhistology.org/wp-content/uploads/2017/10/Or.Dig_.MajGl_.GB-2-2-ping.png)
Mucosal infoldings
The mucosa of the gall bladder is extensively infolded, particularly when the gall bladder is empty. Simple columnar epithelium with short microvilli lines the lumen and the infoldings. 200X
![Lamina propria <p>The mucosa of the gall bladder is extensively infolded, particularly when the gall bladder is empty. Simple columnar epithelium with short microvilli lines the lumen and the infoldings. 200X</p>](https://digitalhistology.org/wp-content/uploads/2017/10/Or.Dig_.MajGl_.GB-2-3-ping.png)
Lamina propria
The mucosa of the gall bladder is extensively infolded, particularly when the gall bladder is empty. Simple columnar epithelium with short microvilli lines the lumen and the infoldings. 200X
![Muscularis externa <p>The mucosa of the gall bladder is extensively infolded, particularly when the gall bladder is empty. Simple columnar epithelium with short microvilli lines the lumen and the infoldings. 200X</p>](https://digitalhistology.org/wp-content/uploads/2017/10/Or.Dig_.MajGl_.GB-2-4-ping.png)
Muscularis externa
The mucosa of the gall bladder is extensively infolded, particularly when the gall bladder is empty. Simple columnar epithelium with short microvilli lines the lumen and the infoldings. 200X
![Image source > <p>Image taken of slide in the University of Mississippi collection.</p>](https://digitalhistology.org/wp-content/uploads/2017/10/Or.Dig_.MajGl_.GB-2-5-ping.png)
Image source >
Image taken of slide in the University of Mississippi collection.