BIOD 151 Module 3 Exam Review 2025 Questions
and Answers Rated 100% Correct
Two divisions of the digestive system - Answer alimentary canal and accessory organs
seven parts of the gastrointestinal tract - Answer mouth, pharynx, esophagus, stomach, small intestine,
large intestine and anus
six digestive accessory organs - Answer teeth, tongue, gallbladder, salivary glands, liver, pancreas
mouth opening - Answer lips
floor of the mouth - Answer tongue
walls of the mouth - Answer cheeks
roof of mouth - Answer hard and soft palates
two bones and membrane the tongue is attached to - Answer hyoid and mandible bone and
membranous lingual frenulum
How many teeth are in the human adult and what do they do? - Answer thirty-two teeth work together
to tear, crush and grind food to mechanically digest food.
What are the four types of teeth? - Answer incisors, canines, premolars, molars
incisors - Answer two, chisel shaped for biting
canine - Answer one pointed for tearing
, pre-molars - Answer two fairly flat for grinding
molars - Answer three flat for crushing
What is the specific function of the salivary gland in the process of digestion? - Answer Food is mixed
and moistened with the saliva secreted from the salivary glands that contain enzymes that begin
chemical digestion process by breaking down starch.
Where are the taste buds located? - Answer Primarily the tongue but also the surface of the mouth and
wall of the pharynx.
Describe the function of the tongue in the digestive process - Answer tongue grips the food, constantly
repositioning it between the teeth and forms the bolus that is pushed back to the pharynx to be
swallowed.
bolus - Answer compact mass of food formed by chewing of the teeth and reposition by the tongue.
three parts of the pharynx - Answer nasopharynx, oropharynx, laryngopharynx
through which sections of the pharynx does air travel? food? - Answer air travels through all three
sections
food travels through oropharynx and laryngopharynx
What prevents food from entering the lungs and why is this necessary? - Answer The epiglottis covers
the esophagus and prevent aspiration of food and liquid.
Describe how the muscular layers in the pharynx assist with food passage. - Answer The two layers of
muscle, circumferential outer layer and inner longitudinal layer, alternatively contract to squeeze the
food into the esophagus by peristalsis.
Tissue layers of the esophagus - Answer the innermost layer is the mucosa which secretes mucus into
the interior the gastrointestinal tract, the second layer is the submucosa which contains blood and
lymph vessels, lymph nodes, nerves, and mucous glands, the third layer is the muscularis externa which
and Answers Rated 100% Correct
Two divisions of the digestive system - Answer alimentary canal and accessory organs
seven parts of the gastrointestinal tract - Answer mouth, pharynx, esophagus, stomach, small intestine,
large intestine and anus
six digestive accessory organs - Answer teeth, tongue, gallbladder, salivary glands, liver, pancreas
mouth opening - Answer lips
floor of the mouth - Answer tongue
walls of the mouth - Answer cheeks
roof of mouth - Answer hard and soft palates
two bones and membrane the tongue is attached to - Answer hyoid and mandible bone and
membranous lingual frenulum
How many teeth are in the human adult and what do they do? - Answer thirty-two teeth work together
to tear, crush and grind food to mechanically digest food.
What are the four types of teeth? - Answer incisors, canines, premolars, molars
incisors - Answer two, chisel shaped for biting
canine - Answer one pointed for tearing
, pre-molars - Answer two fairly flat for grinding
molars - Answer three flat for crushing
What is the specific function of the salivary gland in the process of digestion? - Answer Food is mixed
and moistened with the saliva secreted from the salivary glands that contain enzymes that begin
chemical digestion process by breaking down starch.
Where are the taste buds located? - Answer Primarily the tongue but also the surface of the mouth and
wall of the pharynx.
Describe the function of the tongue in the digestive process - Answer tongue grips the food, constantly
repositioning it between the teeth and forms the bolus that is pushed back to the pharynx to be
swallowed.
bolus - Answer compact mass of food formed by chewing of the teeth and reposition by the tongue.
three parts of the pharynx - Answer nasopharynx, oropharynx, laryngopharynx
through which sections of the pharynx does air travel? food? - Answer air travels through all three
sections
food travels through oropharynx and laryngopharynx
What prevents food from entering the lungs and why is this necessary? - Answer The epiglottis covers
the esophagus and prevent aspiration of food and liquid.
Describe how the muscular layers in the pharynx assist with food passage. - Answer The two layers of
muscle, circumferential outer layer and inner longitudinal layer, alternatively contract to squeeze the
food into the esophagus by peristalsis.
Tissue layers of the esophagus - Answer the innermost layer is the mucosa which secretes mucus into
the interior the gastrointestinal tract, the second layer is the submucosa which contains blood and
lymph vessels, lymph nodes, nerves, and mucous glands, the third layer is the muscularis externa which
