a. the production of bile
b. the production of digestive enzymes
c. the production of blood proteins
d. the removal of blood toxins
e. the storage of iron and certain vitamins
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Question 3
Food is prevented from entering the trachea by the
Select one:
a. pharynx.
b. larynx.
c. epiglottis.
d. glottis.
e. sphincter muscle.
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Question 4