enumerate the different functions of the digestive system.
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1)buccal cavity
2)oesoohagus
3)stomach
4)small intestine
5)large intestine
6)rectum
7)anus
2)oesoohagus
3)stomach
4)small intestine
5)large intestine
6)rectum
7)anus
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hey here's the answer to your question....
The human digestive system is made up of a tube called the alimentary canal(gut),liver,pancreas and gall bladder. Food travels through the body along the alimentary canal which is a continuous tube beginning at the mouth and ending at the anus.
Mouth:-
Digestion of food starts in the mouth. The food that we put into our mouths is broken down into smaller pieces by the action of our teeth. Breaking up food into smaller pieces increases the surface area of the food for the digestive enzymes to act on. The food is then mixed with saliva and it's enzyme,salivary amylase. Salivary amylase breaks down large starch molecules into smaller maltose molecules. However,food is usually not kept long enough in the mouth for all the starch to be broken down into simple sugars. The tongue rolls the partially digested food into small balks which are then swallowed into the oesophagus or gullet.
Oesophagus (Gullet):-
The oesophagus is a narrow tube with strong muscles in it's wall. These muscles contract and relax,producing a wave -like pattern which pushes the food along the oesophagus to the stomach. The involuntary wavelike muscular contractions by which food is moved through the alimentary canal is called peristalsis. The function of the oesophagus is to push the balls of food from the mouth into the stomach. No digestive enzymes are produced here.
Stomach:-
The stomach is a muscular organ. It's walls secrete a liquid called gastric juice which is made up of hydrochloric acid,digestive enzymes called proteases and water. The proteases in the stomach digest long chains. The hydrochloric acid, which activates the proteases and gets them working,also kills unwanted bacteria that may have been swallowed. Muscle contractions of the stomach wall(peristalsis) churn the food inside the stomach and mix it with the gastric juice. When the food leaves the stomach it has become a semi-liquid mass called chyme,which is released in small amounts at different intervals of time into the small intestine.
Small intestine:-
As the food emerges from the stomach into the duodenum a little at a time,bile produced by the liver and stored in the gall bladder is squirted onto it through the bile duct. Bile breaks up large fat droplets into smaller fat droplets.
Large intestine:-
In the large intestine, excess water and minerals are absorbed into the bloodstream. The remaining undigested contents move into the rectum by peristalsis and are stored as faeces.
hope it help...please mark as brainliest...
The human digestive system is made up of a tube called the alimentary canal(gut),liver,pancreas and gall bladder. Food travels through the body along the alimentary canal which is a continuous tube beginning at the mouth and ending at the anus.
Mouth:-
Digestion of food starts in the mouth. The food that we put into our mouths is broken down into smaller pieces by the action of our teeth. Breaking up food into smaller pieces increases the surface area of the food for the digestive enzymes to act on. The food is then mixed with saliva and it's enzyme,salivary amylase. Salivary amylase breaks down large starch molecules into smaller maltose molecules. However,food is usually not kept long enough in the mouth for all the starch to be broken down into simple sugars. The tongue rolls the partially digested food into small balks which are then swallowed into the oesophagus or gullet.
Oesophagus (Gullet):-
The oesophagus is a narrow tube with strong muscles in it's wall. These muscles contract and relax,producing a wave -like pattern which pushes the food along the oesophagus to the stomach. The involuntary wavelike muscular contractions by which food is moved through the alimentary canal is called peristalsis. The function of the oesophagus is to push the balls of food from the mouth into the stomach. No digestive enzymes are produced here.
Stomach:-
The stomach is a muscular organ. It's walls secrete a liquid called gastric juice which is made up of hydrochloric acid,digestive enzymes called proteases and water. The proteases in the stomach digest long chains. The hydrochloric acid, which activates the proteases and gets them working,also kills unwanted bacteria that may have been swallowed. Muscle contractions of the stomach wall(peristalsis) churn the food inside the stomach and mix it with the gastric juice. When the food leaves the stomach it has become a semi-liquid mass called chyme,which is released in small amounts at different intervals of time into the small intestine.
Small intestine:-
As the food emerges from the stomach into the duodenum a little at a time,bile produced by the liver and stored in the gall bladder is squirted onto it through the bile duct. Bile breaks up large fat droplets into smaller fat droplets.
Large intestine:-
In the large intestine, excess water and minerals are absorbed into the bloodstream. The remaining undigested contents move into the rectum by peristalsis and are stored as faeces.
hope it help...please mark as brainliest...
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