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Date:

Topic 5 - ANIMAL NUTRlrloN - PART 2 (Human atimentary canat)

Section A: Multiple Choice Questions [15 markst

1. which of the following gives the correct order of the stages of nutrition?

A Digestion, absorption, assimilation and ingestionB Digestion, ingestion, absorption and assimilationC lngestion, digestion, absorption and assimilationD lngestion, assimilation, digestion and absorption

2. Where is bile produced in man?

A Gallbladder C PancreasB Liver D Spleen

Which of the following best defines peristatsis?

A The movement of food from the mouth to the oesophagusB The movement of food from the mouth to the anusC The contraction of the muscles of the oesophagusD The contraction of the muscles of the alimentary canal

The diagram shows the human alimentary canal.

Where does the digestion of starch begin?

4.

40

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5. The bile duct connects the gall bladder to the duodenum. What happens if the bile duct is blocked?

A Carbohydrate digestion is reduced.B Fat digestion is reduced.C Protein digestion is slow.D The duodenum contents are neutralized more quickly.

6. The diagram shows part of the human alimentary canal.

When food is present, which two structures usually contain bile?

A 1and3B 2and3

C 2and4D 3and4

7. The diagram shows the human alimentary canal.

Which processes occur in part X?

absorption digestion

A

B

cD

J(

xx

J(

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9.

Where do cfierrrft:al digestion and absorption of digested food occur in the human alimentary canal?

Chemical digestion AbsorptionABcD

oesophagusoesophagus

stomachstomach

liverpancreas

ileumoesophagus

ln which order do these events occur in human nutrition?

A digestion -+ ingestion'+ absorption -r assimilationB digestion -+ ingestion -r assimilation + absorptionC ingestion '+ drgestion -r absorption -r assimilationD ingestion -+ digestion + assirnilation '+ absorption

What is the function of the gall bladder?

A Absorption of fat.B Digestion of fat.C Production of bile.D Storage of bile.

11. Where in the alimentary canal is most water abeorbed?

A colon C oesophagusB ileum D stomach

12. The diagram shows part of the human digestive system.

\Arhich part eecretes an acidic digestive juice containing protease?

11. Which region of the alimentary canal has the greateet surface area for absorption of food

10.

A colonB duodenum

C ileumD stomach

molecules?

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12. The diagram shows the alimentary canal. where is the enryme responsible for the first stage of proteindigeetion produced?

13. The diagram shows the human alimentary canal. Which structure absorbs most water?

14. Which secretion, released into the alimentary canal, contrains no enzymes but speeds up fat digestion?

E

15. Which part of the alimentary canal is most acidic?

A bileB intestinaljuice

C pancreatic juiceD saliva

C mouthD stomach

A colonB ileum

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B: Strucfired Questions

The diagram bdott, shows the human alimentary canal and its associated organs. Using the name of thestructule and ttre appropriate number, label the iollowing five structures on the Oiagram. [S1

Structurc 1 - lt ingests food.

Sfrucfure 2- Only proteins are digested here.

Sfrucfure 3- lt absorbs digesfed foodStructure 4 - lt absorbs water from indigestible food.

Structure 5- /f egesfs faeces.

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2. Complete the following sentences by filing in the blanks. [41

(a) After potato has been chewed in the mouth for several minutes, the starch in it is digested into smaller,

molecules.

The process of moving food along the alimentary canal is called

Undigested material is expelled from the alimentary canal by the process of

through the

3. The diagram below shows the human gut.

ldentify the structures labeled A - D [41

A

For each of the organs labeled above, state one major function. [4]

A

(b)

(c)

(a)

(b)

D

B

c

D

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l!

diagram below shows the human alimentary canal and associated organs. [8t

Complete the table below using the words from the following list of possible functions'

absorption

Stomach

assimilation

lleum

digestion

Anus

egestion

Liver

ingestion

Structure Main functions

A

B

c

D

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