HISTOLOGY OF BILIARY SYSTEM
Histology of Gall bladder:
Figure (9): Histology of GB 1. Mucous membrane. 2. Mucosal folds. 3. Muscle coat. 4. Serous layer (Krause, 2005).
(GB= Gallbladder)
The wall of the GB consists of mucosa, which is composed of simple columnar epithelium and lamina propria, a layer of smooth muscles, well-developed per-muscular connective tissue layer and serous membrane. The mucosa has abundant folds that are particularly evident in the empty GB. The epithelial cells are rich in mitochondria and have their nuclei in their basal third; all these cells are capable of secreting small amounts of mucous. Microvilli are frequent at the apical surface. Near the CD, the epithelium invaginates into the lamina propria forming tubuloacinar glands with wide lumens. Cells of these glands have characteristics of mucous secreting cells and are responsible for the production of most of the mucous present in the bile (Singh, 2011).
The muscular layer is thin, with most of the smooth muscle cells arranged around the circumference of the GB. A thick connective tissue layer binds the superior surface of the GB to the liver. The opposite surface is covered by a serous layer and the peritoneum (Singh, 2011).
Histology of
…show more content…
All of them have a common structure. They have a mucosa surrounded by a wall made up of connective tissue, in which some smooth muscle may be present. The mucosa is lined by a tall columnar epithelium with a striated border. At its lower end the bile duct is joined by the main pancreatic duct, the two usually forming a common hepato-pancreatic duct (or ampulla) that opens into the duodenum at the summit of the major duodenal papilla. The mucosa of the hepato-pancreatic duct is highly folded. These folds are believed to constitute a valvular mechanism that prevents duodenal contents from entering the bile and pancreatic ducts (Krause,
3. How does the type of epithelial tissue relate to its function? Give at least 1 example of where you would find each type of epithelial tissue.
1. Name the structure that is a double fold of peritoneum between the lesser curvature of the stomach and liver.
• *Describe the structure and list the functions of the various epithelial tissues, including glandular epithelium. Reference Table 5.5.
Yes, there are multiple striations across the width of the Muscle-Skeletal Longitudinal Section of the cells and the Muscle-Skeletal Cross Section cells.
As I, Saadaf made an effort to fully isolate the small intestine to measure it's length, I
A review of her medical records indicates that she did have her bladder biopsy which confirmed bladder cancer. She is starting radiation therapy today with Dr. Cook. Her radiation treatments will be 5 days a week for 5 weeks. She reports that her chronic HTN is stable with medication; her opiate induced constipation is stable. She states that her bowel regimen is on hold due to her having diarrhea. She continues to take Eloquis for DVT in left leg. She is followed by Dr. Rosen for oncologist.
2. Describe the functional anatomy of the duct system that conveys bile from the liver and digestive juice from the pancreas to the lumen of the
What are the different levels of organization of a muscle down to myofilaments? What is a “sarcomere” and how are its proteins organized?
In this assignment I’m going to talk about the structure of the main tissues which are found within the body as well as what their role is in the terms of two named organs of the body. Tissues are a collection of similar cells that group together to carry out a specific function within the body. There are four different types of tissue found in the human body which include; epithelial tissue; connective tissue; muscle tissue and nerve tissue.
mucus can block the ducts of the pancreas, and that prevents the enzymes from reaching the
Consist of oral cavity, esophagus, gallbladder, liver, stomach, duodenum, pancreas, colon, cecum, appendix, jejunum, and rectum.
The pancreas is a digestive organ that lies below the stomach, it is mostly made up of exocrine and endocrine tissues. The exocrine parts form sacs known as Acini, which connect to ducts with empty into the first part of the intestine (The duodenum). Smaller parts of the exocrine glands are dispersed all throughout the pancreas which are known as islets of Langerhans (Anon, Unknown).