(NF)intro to the alimentary system - Part 1

Question 1

how long is the Gastrointestinal system?

Answer 1

9m long

Question 2

what is go system designed to maximise?

Answer 2

Designed to maximise aborption

Question 3

what is the overall function of the GI system

Answer 3

to ingest and break down food into molecules that can be absorbed into the blood and be taken to the liver to be used to synthesise biomolecules needed for cellular function

Question 4

what are the biomolecules produced when the GI system is done?

Answer 4

biomolecules produced:
- Proteins
- Carbohydrates
- Lipids

Question 5

what does the GI tract consist of?

Answer 5

1. Mouth
2. Pharynx
3. Oesophagus
4. Stomach
5. Small intestine
6. Large intestine

Question 6

what is included in the small intestine?

Answer 6

small intestine includes:
- Duodenum
- jejunum
- ileum

Question 7

what is included in the large intestine?

Answer 7

large intestine includes:
- colon
- cecum
- rectum

Question 8

what makes up the GI system?

Answer 8

GI system = GI tract + Accessory organs

Question 9

what are the accessory organs?

Answer 9

• salivary glands
• liver
• Gall Bladder
• Pancreas

Question 10

what are the three types of salivary glands?

Answer 10

• Parotid
• sublingual
• submandibular

Question 11

what is a bolus?

Answer 11

mixture of chewed food and saliva which is then swallowed to the stomach

Question 12

what is chyme?

Answer 12

food, saliva and any other substances in the stomach

Question 13

what are the 4 stimuli that initiate GI reflexes?

Answer 13

1. distension of wall by luminal contents
2. Chyme osmolarity
3. Chyme acidity
4. Chyme concentrations of specific digestion products