SBI3U Test/Final: Digestive System
questions with complete solutions
passed
digestive system - correct answer ✔✔body system the breaks down food chemically and
mechanically and absorbs nutrients into the body
alimentary canal - correct answer ✔✔the pathway along which food passes through
accessory organs - correct answer ✔✔organs that assist in the digestion process but are not
part of the digestive tract
oral cavity - correct answer ✔✔the first part of the alimentary canal. the teeth pulverize the
ingested food while the salivary gland secretions (water and enzymes) soften and moisten it.
the tongue forms the food into a ball called bolus before it is pushed to the throat.
pharynx (throat) - correct answer ✔✔passes food from the mouth into the esophagus. the
uvula stops the food from entering the nasal cavity, while the epiglottis prevents food from
entering the trachea which leads to the lungs
esophagus - correct answer ✔✔muscular tube that connects the pharynx to the stomach. it
moves the bolus (ingested food) along by wave-like contractions called peristalsis
stomach - correct answer ✔✔large muscular sac that breaks down large food molecules into
smaller molecules. the sac contracts to help mix the contents of the stomach together.
hormones secreted by cells in the stomach lining trigger the release of acid and enzyme-rich
juices which dissolve the food and break down protein. once mixed with the juice, the partially-
digested food forms into a liquid called chyme. because of how acidic the stomach is, it is
protected by a layer of mucus so it is not digested.
questions with complete solutions
passed
digestive system - correct answer ✔✔body system the breaks down food chemically and
mechanically and absorbs nutrients into the body
alimentary canal - correct answer ✔✔the pathway along which food passes through
accessory organs - correct answer ✔✔organs that assist in the digestion process but are not
part of the digestive tract
oral cavity - correct answer ✔✔the first part of the alimentary canal. the teeth pulverize the
ingested food while the salivary gland secretions (water and enzymes) soften and moisten it.
the tongue forms the food into a ball called bolus before it is pushed to the throat.
pharynx (throat) - correct answer ✔✔passes food from the mouth into the esophagus. the
uvula stops the food from entering the nasal cavity, while the epiglottis prevents food from
entering the trachea which leads to the lungs
esophagus - correct answer ✔✔muscular tube that connects the pharynx to the stomach. it
moves the bolus (ingested food) along by wave-like contractions called peristalsis
stomach - correct answer ✔✔large muscular sac that breaks down large food molecules into
smaller molecules. the sac contracts to help mix the contents of the stomach together.
hormones secreted by cells in the stomach lining trigger the release of acid and enzyme-rich
juices which dissolve the food and break down protein. once mixed with the juice, the partially-
digested food forms into a liquid called chyme. because of how acidic the stomach is, it is
protected by a layer of mucus so it is not digested.
