Which of the following is an advantage to having a longer alimentary canal? O Digestion occurs more quickly than in a shorter alimentary canal The liver doesn't have to work as hard since there isn't as much to filter There is more surface area for absorption of nutrients O There is no need for both a small and large intestine
Which of the following is an advantage to having a longer alimentary canal? O Digestion occurs more quickly than in a shorter alimentary canal The liver doesn't have to work as hard since there isn't as much to filter There is more surface area for absorption of nutrients O There is no need for both a small and large intestine
Chapter7: How The Body Uses Food: Digestion And Absorption
Section: Chapter Questions
Problem 16RQ
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Transcribed Image Text:QUESTION 1
Which of the following is an advantage to having a longer alimentary canal?
Digestion occurs more quickly than in a shorter alimentary canal
The liver doesn't have to work as hard since there isn't as much to filter
There is more surface area for absorption of nutrients
O There is no need for both a small and large intestine
Expert Solution
Step 1
Advantages of having a longer alimentary canal are:-
- More extensive processing and the increased surface area of the canal provide greater opportunity for absorption of nutrients.
-
The larger length of the alimentary canal gives sufficient time to the body to digest the food and extract maximum nutrition while the numerous finger-like projections called villi along with micro-villi increase the surface area for absorption. This absorption area is increased because the food is now in contact with more of the cellular area.
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