17184573
Description
Flashcards by Roqaiah Ali, updated more than 1 year ago
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Created by Roqaiah Ali
over 5 years ago
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| Question | Answer |
| 3.1 | By: Roqaiah Ali 8B |
| What job does the digestive system have? | Makes food available in a form the body can use. |
| What is digestion? | Process of breaking down food into a useable form and making its nutrients available. |
| What are the 2 different types of digestion? | - Mechanical - Chemical |
| What is mechanical digestion? | The breaking down of food by being crushed, sliced and torn into smaller pieces; its a physical change because no new substances are made. |
| What is chemical digestion? | Substances in the food the is broken down into simpler chemicals by saliva in your mouth and gastric juice in your stomach. |
| What are 2 forms of mechanical digestion? |
- Biting
- Chewing
Image:
Bc (binary/octet-stream)
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| What are the 4 types of teeth? | - Incisors - Canines - Premolars - Molars |
| What is the job of the incisors? | To bite off pieces small enough to chew. |
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What are the functions of the canine teeth?
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Canine (binary/octet-stream)
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They have no functions. |
| What is your oesophagus? |
A long muscular tube that starts at your mouth and ends at the stomach.
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Oeso (binary/octet-stream)
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What is peristalsis?
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Per (binary/octet-stream)
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The process of pushing food through the digestive tract by alternating contraction and relaxation of muscles. |
| What is epiglottis? | The flap of skin in the oesophagus that stops food entering the windpipe. |
| What is sphincters? | The circle of a muscle. |
| What is Gastric juice? | A mixture of chemicals produced by cells in the stomach wall. |
| What does Gastric juice contain? | - Hydrochloric acid - Mucus - Digestive juices |
| What is the small intestine? | The longest part of the digestive tract. |
| How long can the small intestine be up to? | Up to 6m long. |
| What is the diameter of the small intestine? | 3cm |
| What is duodenum? | The first part of the small intestine. |
| What is pancreas? | An organ associated with the digestive system that produces chemicals to help the digestion of carbohydrates, fats and proteins. |
| What is the Liver? |
The largest internal organ; it provides bile.
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Liver (binary/octet-stream)
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| What is bile? | A greenish liquid responsible for mechanical digestion of fats. |
| What is the lowest part of the small intestine? | The ileum. |
| What is the name of microscopic 'fingers' that greatly increase the surface area of the wall of the small intestine? | The villi. |
| What are the nutrients that pass from the small intestine? | - Fatty acids and glycerol - Amino acids - Glucose |
| What is the large intestine? | The final section of the digestion tract. |
| How long is the large intestine? | 1.5m long |
| What is the diameter of the large intestine? | 6 to 7cm. |
| What is the anus? | A sphincter muscles at the end of the digestive tract. |
| What are the 4 types of digestive disorders? | - Vomiting - Diarrhoea - Heartburn - Appendicitis |
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