3899211
Description
Mind Map by Sophie Koch, updated more than 1 year ago
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Created by Sophie Koch
over 8 years ago
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Digestive system
- 1) Mouth
- Food is moistened with saliva from the salivary gland.
- The salivary glands produce amylase enzyme
in the saliva, which breaks down starch.
- Food is chewed to form a ball (bolus) before being swallowed.
- Food is chewed to form a ball (bolus) before being swallowed.
- The salivary glands produce amylase enzyme
in the saliva, which breaks down starch.
- Food is moistened with saliva from the salivary gland.
- 2) Oesophagus
- This tube takes food from the
mouth to the stomach.
- Its lined with muscles that contract to help the bolus
move along, by peristalsis (Muscles contract in waves
to squeeze food down towards the stomach)
- Its lined with muscles that contract to help the bolus
move along, by peristalsis (Muscles contract in waves
to squeeze food down towards the stomach)
- This tube takes food from the
mouth to the stomach.
- 3) Stomach
- It pummels the food with its muscular walls.
- It produces the protease enzyme, pepsin.
- It produces hydrochloric acid for 2 reasons:
To kill bacteria and to give the right pH for the
protease enzyme to work (pH 2 -acidic).
- It produces hydrochloric acid for 2 reasons:
To kill bacteria and to give the right pH for the
protease enzyme to work (pH 2 -acidic).
- It produces the protease enzyme, pepsin.
- It pummels the food with its muscular walls.
- 4) Small intestine
- Produces protease, amylase
and lipase enzymes to
complete digestion.
- This is also where 'food' is absorbed out
of the digestive system into the body.
- This is also where 'food' is absorbed out
of the digestive system into the body.
- Produces protease, amylase
and lipase enzymes to
complete digestion.
- 5) Large intestine
- Excess water is absorbed from
the food. Leaving waste
material behind.
- Excess water is absorbed from
the food. Leaving waste
material behind.
- 6) Pacreas
- Produces protease, amylase and lipase
enzymes. It releases these into the small
intestine.
- Produces protease, amylase and lipase
enzymes. It releases these into the small
intestine.
- 7) Liver
- Also where bile is produced. Bile neutralises
stomach acid and emulsifies (digest) fats.
- Absorbed nutrient are transported
here and are processed.
- Absorbed nutrient are transported
here and are processed.
- Also where bile is produced. Bile neutralises
stomach acid and emulsifies (digest) fats.
- 8) Gull bladder
- Where bile is stored, before it's
released into the small intestine.
- Where bile is stored, before it's
released into the small intestine.
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