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26 Cards in this Set
- Front
- Back
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An organ of the digestive system where most mechanical breaking down of food happens |
Stomach |
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A muscular tube that connects the mouth to the stomach |
Oesophagus |
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What absorbs water and forms faeces |
Large intestine |
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What are the organs that create chemicals that help the small intestine break down food |
Liver/Gallbladder/Pancreas |
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What organ makes bile, breaks down and eliminates toxins such as nitrogen containing compounds? |
Liver |
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Where does digestion begin? |
The mouth |
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What organ has the two roles of producing digestive enzymes and secreting insulin? |
Pancreas |
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What is the long hollow tube where most absorption of nutrients occurs? |
Small intestine |
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What organ stores bike and releases it as needed to the small intestine? |
Gallbladder |
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What is another term for the Gastrointestinal tract? |
Alimentary canal |
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How many layers does the alimentary canal have? |
4 |
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What is the inner-most layer of the GI epithelium |
Mucosa |
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What surrounds the lumen? |
Mucosa |
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What are the major functions of the mucosa? |
Secrete Absorb Protect |
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What is the areolar connective tissue layer? |
Submucosa |
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What does the submucosa contain? |
Blood vessels. It is highly vascular |
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Function of stomach mucosa |
Secretion |
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Function of intestine mucosa |
Absorption |
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What does the submucosa attach the mucosa to? |
The muscularis layer |
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What does the submucosa regulate? |
The movement of stomach/intestine/blood vessel vasoconstriction |
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What is the muscularis layer? |
Mainly smooth muscle except the mouth/pharynx/upper region of oesophagus and Anus |
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What does the muscularis consist of? |
2 layers of muscle. Inner circular layer and outer longitudinal layer |
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What happens when the muscularis layer is contracted |
Food is moved along the digestive tract |
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What is the outermost layer of the alimentary canal? |
Serosa/Adventitia |
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What happens is the serosa is present |
Attaches the organ to its surrounding structures and secretes serous fluid. |
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What else is the serosa responsible for? |
Reducing friction as it moves other organs in the abdominal cavity |
