Questions and Answers
Where does mechanical digestion take place in the human digestive system?
Mouth and small intestine
What is the primary purpose of chemical digestion?
To break down food into small compounds for the body to use
What is the term for the physical breakdown of large pieces of food into smaller pieces?
Mechanical digestion
How are smaller substances from digestion absorbed in certain organisms?
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What initiates the mechanical digestion of food in the human digestive system?
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Study Notes
Mechanical Digestion
- Mechanical digestion takes place in the mouth and stomach in the human digestive system.
- It refers to the physical breakdown of large pieces of food into smaller pieces.
Chemical Digestion
- The primary purpose of chemical digestion is to break down nutrients into smaller molecules that can be absorbed and utilized by the body.
Absorption
- In certain organisms, smaller substances from digestion are absorbed through the walls of the intestines into the bloodstream.
Initiation of Mechanical Digestion
- The mechanical digestion of food in the human digestive system is initiated by the chewing action of teeth in the mouth.
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