Presented below is a histology art of the microscopic views of some parts of the digestive tract specifically gall bladder, large intestine, and appendix. Their description and function are as follows:
• 𝐆𝐚𝐥𝐥𝐛𝐥𝐚𝐝𝐝𝐞𝐫 is part of the digestive system who is responsible for storing bile. Bile helps the digestive system break down fat. It is mainly a mixture of cholesterol, bilirubin, and bile salts.
•𝐇𝐮𝐦𝐚𝐧 𝐋𝐚𝐫𝐠𝐞 𝐈𝐧𝐭𝐞𝐬𝐭𝐢𝐧𝐞 is along tube that consists of three parts, colon, rectum and anus. It turns food into waste into stool and passes it from the body to the external environment. It also absorbs water and any remaining nutrients from the food before passing the ingestible material to the rectum.
•𝐇𝐮𝐦𝐚𝐧 𝐀𝐩𝐩𝐞𝐧𝐝𝐢𝐱’s function is unknown. However, a theory says that the appendix acts as a storehouse for good bacteria, rebooting the digestive system after a diarrheal illness. Surgical removal of appendix causes no observable health problems.

References:

Gallbladder: What is it, function, Location & Anatomy. Cleveland Clinic. (2021, July 28). Retrieved April 12, 2022, from https://my.clevelandclinic.org/health/body/21690-gallbladder#:~:text=Your%20gallbladder%20is%20part%20of,cholesterol%2C%20bilirubin%20and%20bile%20salts
Hoffman, M. (2019, May 18). Appendix (anatomy): Appendix picture, location, definition, function, conditions, tests, and treatments. WebMD. Retrieved April 12, 2022, from https://www.webmd.com/digestive-disorders/picture-of-the-appendix#:~:text=The%20function%20of%20the%20appendix,remnant%20from%20our%20evolutionary%20past
Introduction to the digestive system. Introduction to the Digestive System | SEER Training. (n.d.). Retrieved April 12, 2022, from https://training.seer.cancer.gov/anatomy/digestive/