Pupil sheet · The gut and physical digestion
The gut and physical digestion — return questions
Name ______________________ Date ____________
Use one to two weeks after the lessons. Keep the notes and the lesson closed.
1. describe
Describe what is meant by physical digestion.
2. state
State how physical digestion helps chemical digestion.
3. calculate
A cube of bread with sides of 2 cm is chewed into pieces about 1 mm across. Treat each piece as a cube with sides of 0.1 cm. Calculate (a) the number of pieces and (b) their total surface area.
(a) Number of pieces: ______________ unit ________
(b) Total surface area: ______________ unit ________
4. identify
Put the four types of human teeth in order, from the middle of the front of the mouth to the back.
Write the number of each step in order.
- Canines
- Premolars
- Molars
- Incisors
- First: ______
- Second: ______
- Third: ______
- Last: ______
5. complete
Complete the description of a tooth.
The crown is covered by …, the hardest substance in the body.
Under it is …, which makes up most of the tooth.
The soft middle is the …,
which contains blood vessels and ….
The root is covered by …
and is embedded in the … bone, under the gum.
6. state
State the job in physical digestion of (a) incisors, (b) canines and (c) premolars and molars.
(a) Incisors
(b) Canines
(c) Premolars and molars
7. identify
Which of these are associated organs of the digestive system? (Food does not pass through an associated organ.) Choose all that are correct.
Tick every correct statement.
- Kidney
- Salivary glands
- Rectum
- Oesophagus
- Gall bladder
- Liver
- Pancreas
8. define
Define (a) ingestion, (b) absorption, (c) assimilation and (d) egestion.
(a) Ingestion
(b) Absorption
(c) Assimilation
(d) Egestion
9. describe
Describe the function of the stomach in physical digestion.
10. outline
Supplement. Outline the role of bile in the digestion of fats and oils.