• Large intestine – is made up of four tissue layers.
o Mucosa – is the innermost layer made up of simple columnar epithelial tissue.
o Submucosa – surrounds the mucosa and is a layer of blood vessels, nerves, and connective tissue.
o Muscularis – comprises smooth muscle tissue and is a layer that surrounds your submucosa.
o Serosa – is the outermost layer and contains a thin layer of simple squamous epithelial tissue.
• Stomach & Duodenum – Your stomach comes in a J-shape sac that connects the esophagus above and the small intestine below. Your duodenum specifically, is the first part of your small intestine. Both your stomach and duodenum have a rich supply of blood derived from the aorta and are also supplied by the nerves coming from your spinal cord.
• Gallbladder – functions to store and concentrate bile. It also releases bile into the digestive system. The layers comprising your gallbladder are:
o Epithelium – thin layer of cells lining the inside of the gallbladder
o Lamina propria – layer of connective tissue
o Muscularis – layer of smooth muscle tissue
o Perimuscular – layer of fibrous connective tissue
o Serosa – a smooth membrane forming the outermost part of your gallbladder.
• Large intestine – is made up of four tissue layers.
o Mucosa – is the innermost layer made up of simple columnar epithelial tissue.
o Submucosa – surrounds the mucosa and is a layer of blood vessels, nerves, and connective tissue.
o Muscularis – comprises smooth muscle tissue and is a layer that surrounds your submucosa.
o Serosa – is the outermost layer and contains a thin layer of simple squamous epithelial tissue.
• Stomach & Duodenum – Your stomach comes in a J-shape sac that connects the esophagus above and the small intestine below. Your duodenum specifically, is the first part of your small intestine. Both your stomach and duodenum have a rich supply of blood derived from the aorta and are also supplied by the nerves coming from your spinal cord.
• Gallbladder – functions to store and concentrate bile. It also releases bile into the digestive system. The layers comprising your gallbladder are:
o Epithelium – thin layer of cells lining the inside of the gallbladder
o Lamina propria – layer of connective tissue
o Muscularis – layer of smooth muscle tissue
o Perimuscular – layer of fibrous connective tissue
o Serosa – a smooth membrane forming the outermost part of your gallbladder.
References:
Christiansen, S. (2022). The Anatomy of the Gallbladder. Verywell health. Retrieved from https://www.verywellhealth.com/gallbladder-anatomy-4788045
Stomach & Duodenum, (n.d.). MUSC Health. Retrieved from https://muschealth.org/medical-services/ddc/patients/digestive-organs/stomach-and-duodenum
Taylor, T. (2020). Large Intestine. Innerbody Research. Retrieved from https://www.innerbody.com/anatomy/digestive/large-intestine
Tissues, organs, & organ systems, (n.d.). Khan Academy. Retrieved from https://www.khanacademy.org/science/biology/principles-of-physiology/body-structure-and-homeostasis/a/tissues-organs-organ-systems