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| Front-side | Reverse-side |
|---|---|
| 1.1 Mouth What is the physical breakdown of food taking place in the mouth? |
Chewing |
| 1.2 Mouth What is the chemical breakdown of food taking place in the mouth? |
Carbohydrase (Amylase) in the saliva |
| 1.3 Mouth Where is saliva from? |
Salivary Gland |
| 1.4 Mouth Why is mucus found in the saliva? |
To help food slip down the throat |
| 2.1 Oesophagus How does peristalsis work? |
The muscles in front relax whilst the muscles behind the food contract, pushing the food forward. |
| 2.1Oesophagus How is the food pushed down the oesophagus? |
By peristalsis |
| 2.3 Oesophagus In what form is the food pushed down the oesophagus? |
In a ball (bolus) |
| 3.1 Stomach What type of enzyme is in the stomach? And what name? |
Protease – Pepsin |
| 3.2 Stomach Why is hydrochloric acid important? |
It provides optimum pH level for protease |
| 3.3 Stomach Why do the muscular walls of the stomach churn up the food? |
To make sure the food is mixed well with the juices |
| 4.1 On the way to the Small Intestines What is in the pancreatic juice? |
All 3 enzymes – protease, carbohydrase, lipase |
| 4.2 On the way to the Small Intestines Where does bile enter the small intestines from? |
Liver – Bile Duct |
| 4.3 On the way to the Small Intestines Where is bile kept? |
Liver – Gall Bladder |
| 4.4 On the way to the Small Intestines What are the two functions of bile? |
1. To emulsfy fat 2. To neutralise the acid in the stomach – provide best pH level for the enzymes in the small intestines |
| 4.5 On the way to the Small Intestines What is emulsion of fat? How does it make digestion more efficient? |
The breakdown of fat into small droplets. It increases surface area |
| 5.1 Small Intestines What do you call the part where the end of digestion takes place? |
Duodenum |
| 5.2 Big Intestines By the time the food reaches your big intestines, what is in it? |
Mainly fibre, dead cells, bacteria and water |
| 5.2 Small Intestines Where is the intestinal juice made? |
Glands in the wall of the small intestine |
| 5.3 Small Intestines What enzymes may be found in the intestinal juice? |
It contains all 3 enzymes – protease, carbohydrase and lipase |
| 5.4 Small Intestines What do you call the part where the absorption of food takes place? |
Ileum |
| 5.5 Small Intestines How are the villi adapted to more efficient absorption of food? (3) |
1. Thin Lining 2. Good Blood Supply 3. Very large surface area |
| 5.6 Small Intestines In the villi, where is the fatty acids and glycerol absorbed into? |
Lacteal (Lymph Capillary) which is in the centre of the villus |
| 5.7 Small Intestines Where is the amino acids and sugars absorbed into? |
The blood capillaries |
| 6.1 Big Intestines What is another name for the big intestines? |
Colon |
| 7.1 Rectum What is the function of the rectum? |
It is where the waste is stored before egestion |
| 8.1Anus What takes place at the anus? |
Egestion |