AP BIOLOGY

ANIMAL PHYSIOLOGY

DIGESTION IN HUMANS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How long does food stay in the small intestine?
A
1 day
B
4-8 hours
C
2 hours
D
8-10 hours
Explanation: 

Detailed explanation-1: -After you eat, it takes about six to eight hours for food to pass through your stomach and small intestine. Food then enters your large intestine (colon) for further digestion, absorption of water and, finally, elimination of undigested food. It takes about 36 hours for food to move through the entire colon.

Detailed explanation-2: -Generally speaking, it takes about 2 to 4 hours for food to move from your stomach to your small intestine. The exact amount of time can depend on several factors, such as the composition and size of your meal, your hormones, and your sex. Women tend to digest food more slowly than men.

Detailed explanation-3: -It can take between four and 11 hours for food to pass into the large intestine (six to eight is average), and it will spend up to 70 hours there before being excreted (the average is 40) – the exact timing depends on your metabolism and what you’ve eaten, and it may vary day to day.

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