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The esophagus provides a passageway for substances from the larynx to the bronchi.

A) True
B) False

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The _______ is the part of the digestive tract that has the most lymph nodules and bacteria.


A) duodenum
B) jejunum
C) ileum
D) colon

E) B) and C)
F) A) and C)

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Because of their location, swollen palatine tonsils may interfere with


A) breathing.
B) swallowing.
C) both breathing and swallowing.
D) neither breathing nor swallowing.

E) B) and D)
F) All of the above

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The _______ is the layer of the alimentary canal that absorbs nutrients.


A) mucosa
B) submucosa
C) muscular layer
D) serosa

E) A) and D)
F) None of the above

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Bile salts function as digestive enzymes to break down fatty acids.

A) True
B) False

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From the stomach, food passes into the duodenum, then the jejunum, and then the ileum.

A) True
B) False

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Pancreatic fluid contains a high concentration of ______ ______, which makes it alkaline.

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The digestive system


A) ingests food, propels food, mechanically and chemically breaks down food, absorbs nutrients, and defecates the remainder.
B) mechanically and chemically assembles food from absorbed nutrients.
C) sends cellular debris to lysosomes.
D) absorbs nutrients in the mouth, pharynx, esophagus and stomach, and releases nutrients in the intestines.

E) A) and B)
F) All of the above

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Peristalsis mixes food in small segments of the alimentary canal with digestive enzymes.

A) True
B) False

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Factors that may affect the rate of absorption of certain medications with age include


A) slowing of the exit of chyme from the stomach.
B) slowing peristalsis.
C) thinning of the stomach lining.
D) all of the above.

E) B) and D)
F) None of the above

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The teeth that are best adapted for biting off hunks of food are the


A) incisors.
B) canines.
C) bicuspids.
D) molars.

E) A) and B)
F) C) and D)

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The _________ reflex regulates the rate at which chyme leaves the stomach.

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Hepatitis C is not transmissible


A) by sharing razors.
B) from mother to baby.
C) from uncooked meats.
D) from a blood transfusion.

E) A) and C)
F) A) and B)

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Chisel-shaped teeth are _______.

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David has sustained severe damage to his liver in a car accident. Digestion of which nutrient will be most affected?


A) Carbohydrates
B) Lipids
C) Proteins
D) Vitamins

E) All of the above
F) B) and C)

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The correct sequence for the layers in the walls of the alimentary canal from innermost to outermost is the


A) mucosa, muscular layer, serosa, submucosa.
B) mucosa, submucosa, muscular layer, serosa.
C) serosa, muscular layer, mucosa, submucosa.
D) submucosa, mucosa, serosa, muscular layer.

E) A) and D)
F) All of the above

Correct Answer

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The double-layered folds of peritoneum that support portions of the small intestine are called ______.

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