Digestive system A and P Flashcards
Where does the digestive system start?
- At the month
Define “Peristalsis”.
The rhythmic disentesion. an contraction of muscle to push food toward the stomach.
What are the 6 functions of the digestive system?
- Ingestion
- Secretion
- Mixing and Propulsion
- Digestion
- Absorption
- Defecation
What does the digestive tract consist of?
- Mouth
- Oropharynx
- Oesophagus
- Stomach
- Small intestine
- Large intestine
- Rectum and anal canal
What are the 3 accessory organs?
- Liver
- Pancreas
- Gall bladder
What 2 organs are 25cm long?
Oesophagus and duodenum
What are the 3 pairs of salivary glands found in the mouth?
- Parotid glands
- Sublingual glands
- Submandular glands
What is the purpose of the epiglotis ?
To prevent food from entering the trachea.
What is the length of the oesophagus?
25cm
What is the diameter of the oesophagus?
2cm
Where does the oesophagus pass through the diaphragm?
At T10
How many sphincter are found in the oesophagus?
2
What is the name and function of the upper most sphincter in the stomach?
- Cardiac sphincter, to prevent regurgitation into the oesophagus
What sphincter prevents the flow of chyme from the stomach to the small intestine?
The pyloric sphincter
What is the end product of digestion in the stomach?
Chyme
How long does it take for food to pass through the stomach?
- 2 to 6 hours
What are the 3 sections of the small intestine?
- Duodenum
- Jejunium
- ilium
How long is the small intestine?
6m
Where does bile go in the duodenum?
Into the pancreatic and live duct.
How long is the Jejunium?
2m
How long is the Ilium?
3m
Which section of the lower intestine has the highest absorption rates?
The ileum due to the presence of villi
Where in the small intestine does the most food breakdown occur?
In the jejunium
What are the sections of the large intesting?
- Cecum
- Ascending colon
- Transverse colon
- Disending colon
- Rectum
