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Anatomy Final Prac.
lab practical
| Question | Answer |
|---|---|
| Where is Alimentary Canal located and how long is it? | Location: mouth to anus, Size: about 9 m long |
| Process of DIGESTION | physical: chewing chemical: enzymatic hydrolysis |
| 4 basic tunics in the Alimentary Canal | Mucosa, Submucosa, Muscularis externa, Serosa |
| What is MUCOSA? | wet epithelial membrane next to the alimentary canal lumen |
| What is MUCOSA consisted of? | epithelium, lamina propria, muscularis mucosae |
| what is the major functions of MUCOSA? | secrete: enzymes, mucus, and hormones absorb digested foodstuffs protect against bacterial invasion |
| what is submucosa? | moderately dense connective tissue containing blood and lymphatic vessels, scattered lymphoid follicles, and never fibers |
| Muscularis externa | bilayer of smooth muscle |
| what is muscularis externa consist of? | inner circular layer outer longitudinal layer myenteric nerve plexus |
| what is the major function of muscularis externa? | major regulator of GI tract motility |
| What is Serosa? | outermost covering of the alimentary canal (visceral peritoneum) |
| what does Serosa consist of? | mesothelium layer of connective tissue |
| Serosa layer in the abdominopelvic cavity | think layer of areolar tissue |
| Serosa layer outside the abdominopelvic cavity | adventitia: layer of coarse, fibrous connective tissue that binds the organ to the surrounding tissues |
| What is the major function of SEROSA? | reduce friction adventitia anchors and protects the surrounded organ |