0
Mechanical digestion involves breaking down food molecules without changing the chemical nature of the molecules in the food. No chemical bonds are broken in mechanical digestion. Tearing forces (e.g. teeth) or muscular movements (e.g. the stomach) can assist mechanical digestion. Chemical digestion, which requires enzymes, involves breaking the bonds within food molecules and thereby producing products that are chemically different from the substrate (reactant). The smooth muscle layers of the small intestine are not set up for mechanical digestion. There are only two layers of smooth muscle in the muscularis externa of the small intestine: an inner circular layer and an outer longitudinal layer. These two muscles are ideal for peristalsis. In the stomach, however, there is an additional third layer in the muscularis externa (an oblique layer). These three layers can move the contents in the stomach around in many different directions. The stomach, therefore, is much better suited for mechanical digestion.
Wiki User
∙ 15y ago
Add your answer:
Earn +20 pts
Is the small intestines chemical or mechanical?
The small intestine completes the process of chemical digestion.
What areas of the body does mechanical digestion occur?
mouth,stomach and small intestine
Does the small intestine have mechanical or chemical digestion?
Yes, in part. Chemical digestion occurs in the mouth (saliva), stomach (gastric acid) and small intestine. The nutrients are mostly absorbed in the walls (lining) of the small intestine.
Is a small intestine a mechanical or chemical digestion?
chemical
Substance responsible for mechanical digestion in the small intestine?
Bile
How is machanicle digestion different for cheminal digestion?
mechanical digestion is with your teeth , chemical digestion is in your stomach and small intestine.
Where does the majority of digestion and nutrients occur?
Small Intestine.
Is a chemical digestion occur only in the small intestine is that true or false?
No, digestion begins in the mouth but also occurs in the stomach and small intestine.
Where does chemical and mechanical digestion take place?
what is responsible for chemical digestion in earthworms
Which organ in the digestive system is not involved in chemical or mechanical digestion?
small intestine
What organ does most digestion take place?
Most chemical digestion occurs in the stomach and absorption occur in the intestines in humans and many other animals.
Where does most digestion occur and how?
most digestion occurs in the small intestine where all the nutrients and minerals are extracted and put ino the bloodstream. the stomach just breaks the food down so it can get into the intestine
