Medically the review by Katherine Marengo LDN, R.D. — written by Rachel Nall, MSN, CRNA — updated on September 5, 2018

When it comes to digestion, chewing is only fifty percent the battle. Together food travels from her mouth into your digestive system, it’s broken down by digestive enzymes that turn it right into smaller nutrient that her body can conveniently absorb.

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This failure is well-known as chemistry digestion. There is no it, her body wouldn’t have the ability to absorb nutrients from the foods items you eat.

Read on come learn an ext about chemistry digestion, including how it’s various from mechanically digestion.

Chemical and also mechanical digestion are the two techniques your body supplies to failure foods. Mechanical digestion involves physical motion to make foods items smaller. Chemistry digestion supplies enzymes to breakdown food.

Mechanical digestion

Mechanical digestion begins in your mouth v chewing, climate moves come churning in the stomach and segmentation in the tiny intestine. Peristalsis is also component of mechanically digestion. This describes involuntary contractions and also relaxations that the muscle of her esophagus, stomach, and also intestines to breakdown food and also move it through your cradle system.

Chemical digestion

Chemical digestion requires the secretions of enzymes throughout her digestive tract. This enzymes rest the chemistry bonds that host food particles together. This enables food come be damaged down into small, digestible parts.

How they job-related together

Once food particles reach your tiny intestine, the intestines proceed to move. This helps keep food corpuscle moving and also exposes much more of castle to cradle enzymes. These motions also help to relocate the spend food towards the big intestine for ultimate excretion.

Digestion involves taking big portions of food and breaking lock down into micronutrients little enough come be took in by cells. Chewing and also peristalsis aid with this, however they don’t make particles small enough. That’s whereby chemical digestion come in.

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

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

Without chemistry digestion, your body wouldn’t be able to absorb nutrients, bring about vitamin deficiencies and also malnutrition.

Some world may lack certain enzymes used in chemical digestion. Because that example, world with lactose intolerance generally don’t make sufficient lactase, the enzyme responsible for breaking down lactose, a protein discovered in milk.

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

Digestive enzymes found in the mouth include:

Lingual lipase. This enzyme breaks under triglycerides, a type of fat.Salivary amylase. This enzyme breaks under polysaccharides, a complex sugar that’s a carbohydrate.

Chemical cradle doesn’t simply stop v enzymes in your mouth.

Here’s a look at at few of the key stops ~ above the digestive system entailing chemical digestion:


In her stomach, unique chief cell secrete cradle enzymes. One is pepsin, i m sorry breaks under proteins. Another is gastric lipase, which breaks down triglycerides. In your stomach, your body absorbs fat-soluble substances, such as aspirin and alcohol.

Small intestine

The tiny intestine is a significant site for chemical digestion and absorption of an essential food components, such as amino acids, peptides, and also glucose because that energy. Over there are many enzymes released in the small intestine and also from the surrounding pancreas for digestion. These include lactase come digest lactose and sucrase to digest sucrose, or sugar.

Large intestine

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

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Chemical cradle is a critical part the the cradle process. Without it, her body wouldn’t have the ability to absorb nutrient from the foodstuffs you eat. While mechanically digestion involves physical movements, such together chewing and muscle contractions, chemistry digestion supplies enzymes to break down food.


Medically the evaluation by Katherine Marengo LDN, R.D. — created by Rachel Nall, MSN, CRNA — update on September 5, 2018