Sci 8 Unit B3.1
NAME: _______________________
3.1 The Digestive System
DATE: ________________________
Following the Path of Food
_____/22 marks
CLASS: ________
This diagram shows the organs of the digestive system. Label the drawing with the missing names of the
organs to then help you answer the questions below. (7 marks)
D)
C)
B)
E)
A)
F)
G)
1. Name the major parts of the digestive tract that food passes through in order
1
______________________, 2__________________________, 3_____________________,
4
_________________________________, 5__________________________________,
2. The digestive tract has two openings:
a. Food enters the body through the ______________________.
b. Waste materials exit the body through the _______________________.
3. a. Where does chemical digestion start? ____________________
b. The physical breakdown of food starts with your teeth & tongue, but the strong churning
muscles of the _________________________ also contribute to mechanical digestion.
c. Where does most of the chemical digestion occur? ______________________________.
4. a. Nutrients are absorbed into the bloodstream by special structures called ______________
which increase the surface area of the inside wall of the _______________________________.
b. Water is absorbed in the ______________________________ once digestion is complete.
5. What are two organs that contribute enzymes to the digestive process but are NOT part of the
digestive tract? _______________________ and _______________________.
(+1) BONUS: What is peristalsis? ___________________________________________________________