What is the function of each organ in the digestive system?

Answer 1

They filter out the food that we eat some keeps the nutrients we eat out of the food and the others get rid of what we don't need.

• Mouth-to tear and grind food, mechanical digestion, the mouth has 32 teeth
• Salivary Gland- 3 pairs, release saliva which moistens food and helps you swallow. It also contains the enzyme amylase which breaks down starch molecules into sugar
• Epiglottis- closes the trachea to prevent choking
• Esophagus- swallowing pushes food into esophagus, a tubular passageway to the stomach
• Stomach- squeezes, sloshes, and mixes food, adds hydrochloric acid and pepsin which changes food into a thick liquid called chyme.
• Small Intestine- chemical substances break down complex sugars into simple sugars into proteins into amino acids and emulsify fats.
• Gallbladder­- emulsify means to change into small drops. Bile- produced in the liver and stored in the gallbladder
• Pancreas- adds more digestive chemicals to the chyme as the chime travels through the small intestine. Trypsin- breaks proteins into amino acids. These amino acids enter the circulatory system where they are transported to the liver for storage, but some are sent directly to cells.
• Large intestine- The last step of digestion is called absorption. It occurs when nutrients pass through the wall of the small intestine and enters the circulatory system. Only waste remains in the small intestine after absorption occurs. They enter the large intestine where water is removed from the wastes and returned back into the body. This process is called reabsorption.
• Rectum and Anus- After reabsorption waste collects in the last 4-6 inches of the large intestine. This part of the large intestine is called the rectum. Defecation occurs when waste products are moved through an opening called the Anus.

Answer 2

The mouth.

The oral cavity, most commonly known as the mouth, is surrounded by the lips - which are at the anterior of the mouth, the throat which opens into the pharynx - this is named the posterior of the mouth, the cheeks - these are the lateral borders of the mouth, and finally, the palate, which is located at the top of the mouth. The lower part of the mouth is composed mainly of the tongue and the muscles that surround this, and aid its movement. The tongue is covered with specialised cells, which are named taste buds. They are named as such because of their sensitivity to tastes that enter the mouth.

Surrounding the palate, on the top of the mouth and the tongue below are the teeth. These are set into the gums which are made up of tissue. An adult's mouth should normally consist of thirty-two permanent/secondary, fully developed teeth, whereas a child's mouth would contain a set of 'milk teeth' which the secondary teeth replace.

When food enters the mouth, the muscles of the lips, cheeks and tongue - which form a ring - help to keep the food in the mouth and act as a barrier. The mouth is also lined by a mucous membrane. This membrane is lubricated by the mouth's production of saliva, produced by three saliva glands.

The tongue is a very important part of the mouth. It's a large muscular organ which is attached to the oral cavity at the posterior, the anterior of the tongue remaining free. The thin fold of tissue attaching the tongue to the floor of the mouth is named the frenulum.

Functions of the mouth:

The particular, crucial functions of the mouth are listed below:

· Ingestion and taste: Through the mouth, liquids and foods are taken in to begin the process of digestion - ingestion. During this process the taste buds in the tongue are stimulated by the production of saliva during the following process

· Mastication, commonly named chewing: This is the movement and action of the muscles around the mouth and, perhaps more vitally, the movement of the (lower) jaw which forces the upper and lower sets of teeth to firmly press together. This action makes the food in the mouth break down into very small and easy to swallow pieces which aid in further digestion.

· Digestion: digestion is able to begin to take place in the mouth as of the presence of amylase, the enzyme that breaks down starch, or carbohydrates.

· Swallowing: The tongue's muscular action, that is caused by the will to swallow, forces and shapes the chewed food into a ball, named 'bolus', and also pushes the bolus into the pharynx to be guided on to further digestion.

· Protection: Lubrication of the mouth is provided by the mucin and water contained in the saliva. Also contained in the saliva is the enzyme named 'lysozyme' which kills and destroys harmful microorganisms.

And they help us to eat

Answer 3

Mouth - mechanical and chemical digestion (salivary amylase)
Oropharynx/laryngopharynx/esophagus - none
Stomach - mechanical and chemical digestion (HCL, pepsin)
Duodendum - chemical digestion (bile, trypsin, chymotrypsin, pancreatic lipase)
Jejunum/ileum - absorption
Large Intestine - dehydration and defecation

Answer 4

1.Mouth-to digest food

2. Esophagus-tube that connect mouth to stomach

3.Stomach-gastric juices break down solid food into liquid

4.Large Intestine-undigested material from small intestine moves here before it leaves your body

5. Small Intestine-food is further digested and absorbed here

Answer 5

the function of organs in the digestive system is to break down food