Digestive System

Question 0

What are the major components of the digestive system?

Answer 0

1) Mouth- where mechanical and chemical digestion begin and chemical digestion begins with the addition of a watery substance called saliva
2) Esophagus- moves food from the mouth to the stomach
3) Stomach- where mechanical and chemical digestion takes place and food is mixed with enzymes and strong digestive solution, such as hydrochloric acid
4) Small Intestine- site of digestion and absorption of nutrients from food
1) villi- structures which increase the surface area of the small intestine for absorbing nutrients
5) Large Intestine- site of water absorption and elimination of unused food particles

Question 1

What are the functions of the digestive system?

Answer 1

1) process of breaking down food into small molecules so they can be absorbed and moved into the blood
2) 4 Steps of processing food:
1) Ingestion
2) Digestion
3) Absorption
4) Elimination
3) 2 Types of Digestion
1) Mechanical- takes place when food is chewed, mixed and churned
2) Chemical- takes place when chemical reactions occur that break down large food molecules into smaller ones

Question 2

How do other body system relate to the digestive system?

Answer 2

1) Circulatory System: bones make blood for the circulatory system