Chapter 8 Textbook notes

Question 1

Where are the organs of the digestive system located?

Answer 1

Within a tube called the gastrointestinal (GI) tract

Question 2

What is the purpose of digestion?

Answer 2

To hydrolize-or break down using water- macromolecules to their subunit molecules

Question 3

What processes are necessary to the digestive process?

Answer 3

1. Ingestion
2. Digestion
3. Movement
4. Absorption
5. Elimination

Question 4

Describe ingestion

Answer 4

Occurs when the mouth takes food in. Can be associated with our diet.

Question 5

Describe mechanical Digestion

Answer 5

Occurs when large pieces of food are divided into smaller pieces. occurs primarily in the mouth by chewing and by wavelike contractions of the smooth muscles in the stomach called peristalsis

Question 6

What are the two types of digestion?

Answer 6

Digestion can be mechanical or chemical

Question 7

Describe chemical digestion

Answer 7

Digestive enzymes hydrolyze our food’s macromolecules into absorbable subunits. It begins in the mouth, continues in the stomach, and is completed in the small intestine