Digestion - Accessory Organs of the Digestive tract

6 important questions on Digestion - Accessory Organs of the Digestive tract

Label the attached diagram with the accessory organs of the digestive tract.

Please refer to picture

What are the salivary glands? What do they do?

The salivary glands are situated in and around the oral cavity.

What do they do?

  1. They continuously secrete saliva
  2. As part of the preparatory phase of digestion the salivary glands increase the secreation of saliva in response to the sight or smell of food.
  3. salivary glands make the saliva in your mouth, which is very important for the health of your mouth and teeth and also for the first stages of digestion of food.



What is saliva? What does it do?

The composition of saliva includes:
water
digestive enzyme
mucus 

The functions of saliva include:
starting the chemical digestion of carbohydrates
Moistens and lubricates food.
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What is the liver? What does it do? Label the right lobe of the liver, the left lobe and where the Gallbladder is

The largest gland in the body. It lies under the diaphragm and is protected by the ribs.

the livers main functions related to digestive system are:
Bile production
Metabolism of carbohydrate, fat and protein.
Detoxification of potentially harmful chemicals
Excretion of bilirubin, cholesterol, hormones and drugs     

What is the gallbladder and bile? What does it do?

The gallbladder is a small green muscular sac that lies behind the liver.

Main function is the the storage and concentration of bile.

Bile is a bitter yellowish green fluid produced by the liver and  stored in, concentrated and secreted by the gall bladder

The main function of bile is the emulsification of fats.

What is the pancreas? What does it do?

It is both a exocrine and endocrine gland.

Endocrine- Secretion of insulin and glucagon directly into the blood.

Exocrine: section of pancreatic juice via the pancreatic duct in the duodenum. The ph of the pancreatic juice helps to neutralise the acid chime from the stomach, there proteching the small intestine from damage by acidity.

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