Medically the evaluation by Katherine Marengo LDN, R.D., Nutrition — created by Rachel Nall, MSN, CRNA — update on September 5, 2022

When it comes to digestion, chewing is only half the battle. Together food travel from her mouth right into your digestive system, it’s damaged down by digestive enzymes that revolve it right into smaller nutrient that her body can conveniently absorb.

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This malfunction is recognized as chemistry digestion. There is no it, her body wouldn’t have the ability to absorb nutrients from the foodstuffs you eat.

Read on come learn an ext about chemistry digestion, including just how it’s different from mechanical digestion.

Chemical and mechanical digestion space the two techniques your body uses to break down foods. Mechanical digestion involves physical activity to make foodstuffs smaller. Chemical digestion offers enzymes to break down food.

Mechanical digestion

Mechanical digestion starts in her mouth v chewing, climate moves come churning in the stomach and segmentation in the little intestine. Peristalsis is also part of mechanically digestion. This refers to involuntary contractions and relaxations of the muscle of your esophagus, stomach, and also intestines to breakdown food and also move it with your cradle system.

Chemical digestion

Chemical digestion involves the secretions of enzymes throughout her digestive tract. This enzymes break the chemical bonds that organize food particles together. This allows food to be damaged down into small, digestible parts.

How they job-related together

Once food particles with your tiny intestine, the intestines proceed to move. This helps store food corpuscle moving and also exposes more of them to digestive enzymes. These activities also aid to move the digested food towards the large intestine for eventual excretion.

Digestion entails taking huge portions the food and breaking castle down into micronutrients little enough come be took in by cells. Chewing and peristalsis assist with this, but they don’t make particles little enough. That’s whereby chemical digestion come in.

Chemical digestion division down various nutrients, such together proteins, carbohydrates, and also fats, into also smaller parts:

Fats break down into fatty acids and monoglycerides.Nucleic acids malfunction into nucleotides.Polysaccharides, or carbohydrate sugars, break down right into monosaccharides.Proteins break down into amino acids.

Without chemical digestion, her body wouldn’t be able to absorb nutrients, causing vitamin deficiencies and malnutrition.

Some world may lack particular enzymes offered in chemistry digestion. Because that example, civilization with lactose intolerance usually don’t make sufficient lactase, the enzyme responsible because that breaking under lactose, a protein discovered in milk.

Chemical digestion begins in your mouth. As you chew, her salivary glands release saliva into your mouth. The saliva contains digestive enzymes that start off the process of chemical digestion.

Digestive enzymes uncovered in the mouth include:

Lingual lipase. This enzyme breaks down triglycerides, a type of fat.Salivary amylase. This enzyme breaks down polysaccharides, a complicated sugar it is a carbohydrate.

Chemical cradle doesn’t just stop v enzymes in her mouth.

Here’s a look at at few of the key stops on the digestive system including chemical digestion:


In her stomach, distinct chief cells secrete digestive enzymes. One is pepsin, i beg your pardon breaks under proteins. One more is gastric lipase, which breaks under triglycerides. In your stomach, your body absorbs fat-soluble substances, such as aspirin and also alcohol.

Small intestine

The little intestine is a significant site because that chemical digestion and absorption of crucial food components, such as amino acids, peptides, and also glucose because that energy. Over there are lots of enzymes exit in the tiny intestine and also from the adjacent pancreas because that digestion. These include lactase come digest lactose and sucrase to digest sucrose, or sugar.

Large intestine

The big intestine doesn’t release digestive enzymes, however it does contain bacteria that further break down nutrients. It also absorbs vitamins, minerals, and also water.

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Chemical cradle is a an important part the the cradle process. Without it, her body wouldn’t have the ability to absorb nutrients from the foods you eat. While mechanically digestion requires physical movements, such as chewing and muscle contractions, chemistry digestion provides enzymes to breakdown food.


Medically the review by Katherine Marengo LDN, R.D., Nutrition — composed by Rachel Nall, MSN, CRNA — update on September 5, 2022