MECHANICAL AND CHEMICAL DIGESTION

MECHANICAL AND CHEMICAL DIGESTION

Mechanical digestion is where the food is broken down into smaller pieces.

Chemical digestion is where the food is chemically broken down into subatomic particles, starting with the saliva in the mouth and continuing through the small intestine.

Marifer Zermeño 

Mechanical and Chemical Digestion

Mechanical digestion refers to the  movements, like the ones the stomach makes to digest all food , and the small intestine also makes movements to break down the food.
Chemical is the one thatprovides chemicals to take the nutrients from the food and to breake it up.

PEDRO CAMPOS

Mechanical and Chemical Digestion

Chemical digestion is...

The process through which the body reduces food to a size where the nutrients that it contains can be absorbed.

And mechanical digestion is...

Mechanical digestion is the breakdown of food through chewing, mixing, or churning. Mechanical digestion occurs in the mouth and stomach.

Mechanical & Chemical Digestion

Mechanical digestion is the fisical break down of the food. This accours in the:

• Mouth
• Esophagus
• Stomach
• Small intestine

There are two types of M.D.

• Mastication
• Peristalsis

Chemical digestion recall many organs. During the chemical digestion, enzymes brake down food molecules by hydrolysis, there exist eight digestive enzymes responsible for chemical digestion:

• Nuclease
• Protease
• Collagenase
• Lipase
• Amylase
• Elastase
• Trypsin
• Chimotrypsin

---VALERIA G.

Mechanical & Chemical digestion

Mechanical digestion is when your body makes a movement to break down the food & it occurs in this parts:

• Mouth
• Esophagus
• Stomach

Chemical digestion: some organs secret substances that help during the process of digestion.

Here I put a VIDEO hope you enjoy it!

By: Caro Godoy

Chemical and Mechanical digestion.

There are 2 types of digestion:

• Mechanical:It occurs mainly in the mouth and in the stomach which "cut" the food in small pieces this means that food is changed physically but not chemical.
• Chemical:it chemicaly transforms food in things like sugars,fats,etc..saliva is also involved in this process.
  

By: Valeria Alfaro 

Physical and Chemical Digestion

Physical Digestion:
 -Is the breakdown of food by physical means.
 -Physical digestion starts when we use our knife and fork to brake down large substances.
 -Our teeth take over to grind food into small particles wich can be swallowed
 -Physical digestion also includes peristalsis which helps move food down the digestive tract and the muscular churning of food within the stomach which helps mix food substances with digestive juices and acid.


Chemical Digestion:
*   Why is chemical digestion needed?
- Chewing, churning, and mixing of food with digestive juices can only separate molecules from each other. These actions cannot split up molecules. Many nutrient molecules are too large to pass through cell membranes (i.e. they cannot be absorbed).- Molecules of water, vitamins, and minerals are small enough to be absorbed through the intestinal wall and into the blood stream.
- Proteins, carbohydrates, and fat molecules are too large and must be broken down further by chemical means. This is chemical digestion.

HOPE IT HELPS YOU!!!

Paulina Hernandez