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3.3.4 Human Digestive System 2
Follow-Me – iQuiz
Q. Name a structure in the human digestive system, other than teeth, which is involved in mechanical digestion.
5 – 7
Adds fibre, fibre absorbs water, peristalsis encouraged,
faster digestive transit
Breakdown of food
Bacteria that live in or on another organism involving
benefit
Amino acids
Duodenum; Small intestine
Digestion; Production of vitamins; Benefit immune
system
Diffusion; Passive transport
Colon
Gall bladder
Large surface area; Good blood and lymph supply; Lining one
cell thick; Long; Villi
Pancreas; Duodenum
Pancreas; Liver
Peristalsis
Emulsification; Raises pH; Makes alkaline
Tongue; Oesophagus; Stomach; Small intestine
Solubility; Absorption; Transport
Produces enzymes; Neutralises chyme
Stomach
7 – 9
Ileum; Villi
Above and to the right
Molars
Alkaline
CONGRATULATIONS
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for the Next Question
Q. Describe two functions of bile in relation to digestion.
5 – 7
Adds fibre, fibre absorbs water, peristalsis encouraged,
faster digestive transit
Breakdown of food
Bacteria that live in or on another organism involving
benefit
Amino acids
Duodenum; Small intestine
Digestion; Production of vitamins; Benefit immune
system
Diffusion; Passive transport
Colon
Gall bladder
Large surface area; Good blood and lymph supply; Lining one
cell thick; Long; Villi
Pancreas; Duodenum
Pancreas; Liver
Peristalsis
Emulsification; Raises pH; Makes alkaline
Tongue; Oesophagus; Stomach; Small intestine
Solubility; Absorption; Transport
Produces enzymes; Neutralises chyme
Stomach
7 – 9
Ileum; Villi
Above and to the right
Molars
Alkaline
CONGRATULATIONS
Please CLICK on THIS BOX
for the Next Question
Q. Where is lipase secreted?
5 – 7
Adds fibre, fibre absorbs water, peristalsis encouraged,
faster digestive transit
Breakdown of food
Bacteria that live in or on another organism involving
benefit
Amino acids
Duodenum; Small intestine
Digestion; Production of vitamins; Benefit immune
system
Diffusion; Passive transport
Colon
Gall bladder
Large surface area; Good blood and lymph supply; Lining one
cell thick; Long; Villi
Pancreas; Duodenum
Pancreas; Liver
Peristalsis
Emulsification; Raises pH; Makes alkaline
Tongue; Oesophagus; Stomach; Small intestine
Solubility; Absorption; Transport
Produces enzymes; Neutralises chyme
Stomach
7 – 9
Ileum; Villi
Above and to the right
Molars
Alkaline
CONGRATULATIONS
Please CLICK on THIS BOX
for the Next Question
Q. What are symbiotic bacteria?
5 – 7
Adds fibre, fibre absorbs water, peristalsis encouraged,
faster digestive transit
Breakdown of food
Bacteria that live in or on another organism involving
benefit
Amino acids
Duodenum; Small intestine
Digestion; Production of vitamins; Benefit immune
system
Diffusion; Passive transport
Colon
Gall bladder
Large surface area; Good blood and lymph supply; Lining one
cell thick; Long; Villi
Pancreas; Duodenum
Pancreas; Liver
Peristalsis
Emulsification; Raises pH; Makes alkaline
Tongue; Oesophagus; Stomach; Small intestine
Solubility; Absorption; Transport
Produces enzymes; Neutralises chyme
Stomach
7 – 9
Ileum; Villi
Above and to the right
Molars
Alkaline
CONGRATULATIONS
Please CLICK on THIS BOX
for the Next Question
Q. Name the part of the digestive system in which the products of digestion absorbed into the blood.
5 – 7
Adds fibre, fibre absorbs water, peristalsis encouraged,
faster digestive transit
Breakdown of food
Bacteria that live in or on another organism involving
benefit
Amino acids
Duodenum; Small intestine
Digestion; Production of vitamins; Benefit immune
system
Diffusion; Passive transport
Colon
Gall bladder
Large surface area; Good blood and lymph supply; Lining one
cell thick; Long; Villi
Pancreas; Duodenum
Pancreas; Liver
Peristalsis
Emulsification; Raises pH; Makes alkaline
Tongue; Oesophagus; Stomach; Small intestine
Solubility; Absorption; Transport
Produces enzymes; Neutralises chyme
Stomach
7 – 9
Ileum; Villi
Above and to the right
Molars
Alkaline
CONGRATULATIONS
Please CLICK on THIS BOX
for the Next Question
Q. Explain how the ileum (small intestine) is adapted for the absorption of the products of digestion.
5 – 7
Adds fibre, fibre absorbs water, peristalsis encouraged,
faster digestive transit
Breakdown of food
Bacteria that live in or on another organism involving
benefit
Amino acids
Duodenum; Small intestine
Digestion; Production of vitamins; Benefit immune
system
Diffusion; Passive transport
Colon
Gall bladder
Large surface area; Good blood and lymph supply; Lining one
cell thick; Long; Villi
Pancreas; Duodenum
Pancreas; Liver
Peristalsis
Emulsification; Raises pH; Makes alkaline
Tongue; Oesophagus; Stomach; Small intestine
Solubility; Absorption; Transport
Produces enzymes; Neutralises chyme
Stomach
7 – 9
Ileum; Villi
Above and to the right
Molars
Alkaline
CONGRATULATIONS
Please CLICK on THIS BOX
for the Next Question
Q. What is meant by the term digestion?
5 – 7
Adds fibre, fibre absorbs water, peristalsis encouraged,
faster digestive transit
Breakdown of food
Bacteria that live in or on another organism involving
benefit
Amino acids
Duodenum; Small intestine
Digestion; Production of vitamins; Benefit immune
system
Diffusion; Passive transport
Colon
Gall bladder
Large surface area; Good blood and lymph supply; Lining one
cell thick; Long; Villi
Pancreas; Duodenum
Pancreas; Liver
Peristalsis
Emulsification; Raises pH; Makes alkaline
Tongue; Oesophagus; Stomach; Small intestine
Solubility; Absorption; Transport
Produces enzymes; Neutralises chyme
Stomach
7 – 9
Ileum; Villi
Above and to the right
Molars
Alkaline
CONGRATULATIONS
Please CLICK on THIS BOX
for the Next Question
Q. Where in the human body is the liver located in relation to the stomach?
5 – 7
Adds fibre, fibre absorbs water, peristalsis encouraged,
faster digestive transit
Breakdown of food
Bacteria that live in or on another organism involving
benefit
Amino acids
Duodenum; Small intestine
Digestion; Production of vitamins; Benefit immune
system
Diffusion; Passive transport
Colon
Gall bladder
Large surface area; Good blood and lymph supply; Lining one
cell thick; Long; Villi
Pancreas; Duodenum
Pancreas; Liver
Peristalsis
Emulsification; Raises pH; Makes alkaline
Tongue; Oesophagus; Stomach; Small intestine
Solubility; Absorption; Transport
Produces enzymes; Neutralises chyme
Stomach
7 – 9
Ileum; Villi
Above and to the right
Molars
Alkaline
CONGRATULATIONS
Please CLICK on THIS BOX
for the Next Question
Q. Name a process involved in the passage of the products of digestion into the blood.
5 – 7
Adds fibre, fibre absorbs water, peristalsis encouraged,
faster digestive transit
Breakdown of food
Bacteria that live in or on another organism involving
benefit
Amino acids
Duodenum; Small intestine
Digestion; Production of vitamins; Benefit immune
system
Diffusion; Passive transport
Colon
Gall bladder
Large surface area; Good blood and lymph supply; Lining one
cell thick; Long; Villi
Pancreas; Duodenum
Pancreas; Liver
Peristalsis
Emulsification; Raises pH; Makes alkaline
Tongue; Oesophagus; Stomach; Small intestine
Solubility; Absorption; Transport
Produces enzymes; Neutralises chyme
Stomach
7 – 9
Ileum; Villi
Above and to the right
Molars
Alkaline
CONGRATULATIONS
Please CLICK on THIS BOX
for the Next Question
Q. A person who has suffered from constipation may be advised to increase the amount of wholegrain cereal in her/his diet.
Why?
5 – 7
Adds fibre, fibre absorbs water, peristalsis encouraged,
faster digestive transit
Breakdown of food
Bacteria that live in or on another organism involving
benefit
Amino acids
Duodenum; Small intestine
Digestion; Production of vitamins; Benefit immune
system
Diffusion; Passive transport
Colon
Gall bladder
Large surface area; Good blood and lymph supply; Lining one
cell thick; Long; Villi
Pancreas; Duodenum
Pancreas; Liver
Peristalsis
Emulsification; Raises pH; Makes alkaline
Tongue; Oesophagus; Stomach; Small intestine
Solubility; Absorption; Transport
Produces enzymes; Neutralises chyme
Stomach
7 – 9
Ileum; Villi
Above and to the right
Molars
Alkaline
CONGRATULATIONS
Please CLICK on THIS BOX
for the Next Question
Q. Why is digestion necessary?
5 – 7
Adds fibre, fibre absorbs water, peristalsis encouraged,
faster digestive transit
Breakdown of food
Bacteria that live in or on another organism involving
benefit
Amino acids
Duodenum; Small intestine
Digestion; Production of vitamins; Benefit immune
system
Diffusion; Passive transport
Colon
Gall bladder
Large surface area; Good blood and lymph supply; Lining one
cell thick; Long; Villi
Pancreas; Duodenum
Pancreas; Liver
Peristalsis
Emulsification; Raises pH; Makes alkaline
Tongue; Oesophagus; Stomach; Small intestine
Solubility; Absorption; Transport
Produces enzymes; Neutralises chyme
Stomach
7 – 9
Ileum; Villi
Above and to the right
Molars
Alkaline
CONGRATULATIONS
Please CLICK on THIS BOX
for the Next Question
Q. From what organ does the bile duct leave?
5 – 7
Adds fibre, fibre absorbs water, peristalsis encouraged,
faster digestive transit
Breakdown of food
Bacteria that live in or on another organism involving
benefit
Amino acids
Duodenum; Small intestine
Digestion; Production of vitamins; Benefit immune
system
Diffusion; Passive transport
Colon
Gall bladder
Large surface area; Good blood and lymph supply; Lining one
cell thick; Long; Villi
Pancreas; Duodenum
Pancreas; Liver
Peristalsis
Emulsification; Raises pH; Makes alkaline
Tongue; Oesophagus; Stomach; Small intestine
Solubility; Absorption; Transport
Produces enzymes; Neutralises chyme
Stomach
7 – 9
Ileum; Villi
Above and to the right
Molars
Alkaline
CONGRATULATIONS
Please CLICK on THIS BOX
for the Next Question
Q. From which part of the alimentary canal does food arrive into the duodenum?
5 – 7
Adds fibre, fibre absorbs water, peristalsis encouraged,
faster digestive transit
Breakdown of food
Bacteria that live in or on another organism involving
benefit
Amino acids
Duodenum; Small intestine
Digestion; Production of vitamins; Benefit immune
system
Diffusion; Passive transport
Colon
Gall bladder
Large surface area; Good blood and lymph supply; Lining one
cell thick; Long; Villi
Pancreas; Duodenum
Pancreas; Liver
Peristalsis
Emulsification; Raises pH; Makes alkaline
Tongue; Oesophagus; Stomach; Small intestine
Solubility; Absorption; Transport
Produces enzymes; Neutralises chyme
Stomach
7 – 9
Ileum; Villi
Above and to the right
Molars
Alkaline
CONGRATULATIONS
Please CLICK on THIS BOX
for the Next Question
Q. Name the part of the digestive system in which water is absorbed into the blood.
5 – 7
Adds fibre, fibre absorbs water, peristalsis encouraged,
faster digestive transit
Breakdown of food
Bacteria that live in or on another organism involving
benefit
Amino acids
Duodenum; Small intestine
Digestion; Production of vitamins; Benefit immune
system
Diffusion; Passive transport
Colon
Gall bladder
Large surface area; Good blood and lymph supply; Lining one
cell thick; Long; Villi
Pancreas; Duodenum
Pancreas; Liver
Peristalsis
Emulsification; Raises pH; Makes alkaline
Tongue; Oesophagus; Stomach; Small intestine
Solubility; Absorption; Transport
Produces enzymes; Neutralises chyme
Stomach
7 – 9
Ileum; Villi
Above and to the right
Molars
Alkaline
CONGRATULATIONS
Please CLICK on THIS BOX
for the Next Question
Q. Where does lipase act?
5 – 7
Adds fibre, fibre absorbs water, peristalsis encouraged,
faster digestive transit
Breakdown of food
Bacteria that live in or on another organism involving
benefit
Amino acids
Duodenum; Small intestine
Digestion; Production of vitamins; Benefit immune
system
Diffusion; Passive transport
Colon
Gall bladder
Large surface area; Good blood and lymph supply; Lining one
cell thick; Long; Villi
Pancreas; Duodenum
Pancreas; Liver
Peristalsis
Emulsification; Raises pH; Makes alkaline
Tongue; Oesophagus; Stomach; Small intestine
Solubility; Absorption; Transport
Produces enzymes; Neutralises chyme
Stomach
7 – 9
Ileum; Villi
Above and to the right
Molars
Alkaline
CONGRATULATIONS
Please CLICK on THIS BOX
for the Next Question
Q. Give two activities of symbiotic bacteria in the human digestive system.
5 – 7
Adds fibre, fibre absorbs water, peristalsis encouraged,
faster digestive transit
Breakdown of food
Bacteria that live in or on another organism involving
benefit
Amino acids
Duodenum; Small intestine
Digestion; Production of vitamins; Benefit immune
system
Diffusion; Passive transport
Colon
Gall bladder
Large surface area; Good blood and lymph supply; Lining one
cell thick; Long; Villi
Pancreas; Duodenum
Pancreas; Liver
Peristalsis
Emulsification; Raises pH; Makes alkaline
Tongue; Oesophagus; Stomach; Small intestine
Solubility; Absorption; Transport
Produces enzymes; Neutralises chyme
Stomach
7 – 9
Ileum; Villi
Above and to the right
Molars
Alkaline
CONGRATULATIONS
Please CLICK on THIS BOX
for the Next Question
Q. State one digestive function of the pancreas.
5 – 7
Adds fibre, fibre absorbs water, peristalsis encouraged,
faster digestive transit
Breakdown of food
Bacteria that live in or on another organism involving
benefit
Amino acids
Duodenum; Small intestine
Digestion; Production of vitamins; Benefit immune
system
Diffusion; Passive transport
Colon
Gall bladder
Large surface area; Good blood and lymph supply; Lining one
cell thick; Long; Villi
Pancreas; Duodenum
Pancreas; Liver
Peristalsis
Emulsification; Raises pH; Makes alkaline
Tongue; Oesophagus; Stomach; Small intestine
Solubility; Absorption; Transport
Produces enzymes; Neutralises chyme
Stomach
7 – 9
Ileum; Villi
Above and to the right
Molars
Alkaline
CONGRATULATIONS
Please CLICK on THIS BOX
for the Next Question
Q. What process results from the contraction of the muscles in the small intestine?
5 – 7
Adds fibre, fibre absorbs water, peristalsis encouraged,
faster digestive transit
Breakdown of food
Bacteria that live in or on another organism involving
benefit
Amino acids
Duodenum; Small intestine
Digestion; Production of vitamins; Benefit immune
system
Diffusion; Passive transport
Colon
Gall bladder
Large surface area; Good blood and lymph supply; Lining one
cell thick; Long; Villi
Pancreas; Duodenum
Pancreas; Liver
Peristalsis
Emulsification; Raises pH; Makes alkaline
Tongue; Oesophagus; Stomach; Small intestine
Solubility; Absorption; Transport
Produces enzymes; Neutralises chyme
Stomach
7 – 9
Ileum; Villi
Above and to the right
Molars
Alkaline
CONGRATULATIONS
Please CLICK on THIS BOX
for the Next Question
Q. Indicate which of the following most accurately represents the pH of the contents of the small intestine. Acidic. Neutral.
Alkaline.
5 – 7
Adds fibre, fibre absorbs water, peristalsis encouraged,
faster digestive transit
Breakdown of food
Bacteria that live in or on another organism involving
benefit
Amino acids
Duodenum; Small intestine
Digestion; Production of vitamins; Benefit immune
system
Diffusion; Passive transport
Colon
Gall bladder
Large surface area; Good blood and lymph supply; Lining one
cell thick; Long; Villi
Pancreas; Duodenum
Pancreas; Liver
Peristalsis
Emulsification; Raises pH; Makes alkaline
Tongue; Oesophagus; Stomach; Small intestine
Solubility; Absorption; Transport
Produces enzymes; Neutralises chyme
Stomach
7 – 9
Ileum; Villi
Above and to the right
Molars
Alkaline
CONGRATULATIONS
Please CLICK on THIS BOX
for the Next Question
Q. Name two glands that pass their secretions into the small intestine.
5 – 7
Adds fibre, fibre absorbs water, peristalsis encouraged,
faster digestive transit
Breakdown of food
Bacteria that live in or on another organism involving
benefit
Amino acids
Duodenum; Small intestine
Digestion; Production of vitamins; Benefit immune
system
Diffusion; Passive transport
Colon
Gall bladder
Large surface area; Good blood and lymph supply; Lining one
cell thick; Long; Villi
Pancreas; Duodenum
Pancreas; Liver
Peristalsis
Emulsification; Raises pH; Makes alkaline
Tongue; Oesophagus; Stomach; Small intestine
Solubility; Absorption; Transport
Produces enzymes; Neutralises chyme
Stomach
7 – 9
Ileum; Villi
Above and to the right
Molars
Alkaline
CONGRATULATIONS
Please CLICK on THIS BOX
for the Next Question
Q. What is the approximate pH of the site of action of lipase?
5 – 7
Adds fibre, fibre absorbs water, peristalsis encouraged,
faster digestive transit
Breakdown of food
Bacteria that live in or on another organism involving
benefit
Amino acids
Duodenum; Small intestine
Digestion; Production of vitamins; Benefit immune
system
Diffusion; Passive transport
Colon
Gall bladder
Large surface area; Good blood and lymph supply; Lining one
cell thick; Long; Villi
Pancreas; Duodenum
Pancreas; Liver
Peristalsis
Emulsification; Raises pH; Makes alkaline
Tongue; Oesophagus; Stomach; Small intestine
Solubility; Absorption; Transport
Produces enzymes; Neutralises chyme
Stomach
7 – 9
Ileum; Villi
Above and to the right
Molars
Alkaline
CONGRATULATIONS
Please CLICK on THIS BOX
for the Next Question
Q. Proteins are digested to simpler substances. What are these simpler substances called?
5 – 7
Adds fibre, fibre absorbs water, peristalsis encouraged,
faster digestive transit
Breakdown of food
Bacteria that live in or on another organism involving
benefit
Amino acids
Duodenum; Small intestine
Digestion; Production of vitamins; Benefit immune
system
Diffusion; Passive transport
Colon
Gall bladder
Large surface area; Good blood and lymph supply; Lining one
cell thick; Long; Villi
Pancreas; Duodenum
Pancreas; Liver
Peristalsis
Emulsification; Raises pH; Makes alkaline
Tongue; Oesophagus; Stomach; Small intestine
Solubility; Absorption; Transport
Produces enzymes; Neutralises chyme
Stomach
7 – 9
Ileum; Villi
Above and to the right
Molars
Alkaline
CONGRATULATIONS
Please CLICK on THIS BOX
for the Next Question
Q. In which organ is food churned into chyme?
5 – 7
Adds fibre, fibre absorbs water, peristalsis encouraged,
faster digestive transit
Breakdown of food
Bacteria that live in or on another organism involving
benefit
Amino acids
Duodenum; Small intestine
Digestion; Production of vitamins; Benefit immune
system
Diffusion; Passive transport
Colon
Gall bladder
Large surface area; Good blood and lymph supply; Lining one
cell thick; Long; Villi
Pancreas; Duodenum
Pancreas; Liver
Peristalsis
Emulsification; Raises pH; Makes alkaline
Tongue; Oesophagus; Stomach; Small intestine
Solubility; Absorption; Transport
Produces enzymes; Neutralises chyme
Stomach
7 – 9
Ileum; Villi
Above and to the right
Molars
Alkaline
CONGRATULATIONS
Please CLICK on THIS BOX
for the Next Question
Q. Which teeth grind food into smaller pieces?
5 – 7
Adds fibre, fibre absorbs water, peristalsis encouraged,
faster digestive transit
Breakdown of food
Bacteria that live in or on another organism involving
benefit
Amino acids
Duodenum; Small intestine
Digestion; Production of vitamins; Benefit immune
system
Diffusion; Passive transport
Colon
Gall bladder
Large surface area; Good blood and lymph supply; Lining one
cell thick; Long; Villi
Pancreas; Duodenum
Pancreas; Liver
Peristalsis
Emulsification; Raises pH; Makes alkaline
Tongue; Oesophagus; Stomach; Small intestine
Solubility; Absorption; Transport
Produces enzymes; Neutralises chyme
Stomach
7 – 9
Ileum; Villi
Above and to the right
Molars
Alkaline
CONGRATULATIONS
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