BIOD 151 Module 3 Exam Revision Guide 2025. All Exam Questions and
Correct Answers With 100% Correct Answers | Latest 2025 Update.
Name the two main divisions of the digestive system organs. - ANSWER- The human digestive
organs can be divided into those of the alimentary canal and the accessory digestive organs.
Name the seven parts of the gastrointestinal tract. - ANSWER- The gastrointestinal tract is
composed of the mouth, pharynx, esophagus, stomach, small intestine, large intestine, and anus
Name the six digestive system accessory organs. - ANSWER- The accessory organs are the
teeth, tongue, gallbladder, salivary glands, liver and pancreas.
Review all the figures and diagrams, including the GI tract and accessory organs. - ANSWER-
see module
What structures respectively form these parts of the mouth?
a. Opening
b. Floor
c. Walls
d. Roof - ANSWER- a. Opening = Lips b. Floor = Tongue c. Walls = Cheeks d. Roof = Hard/soft
palates
List the two bones and the membrane to which the tongue is attached - ANSWER- The tongue
is attached to the hyoid bone and the mandible and the membranous lingual frenulum.
, How many teeth are there in an adult human and what do they do? - ANSWER- There are
thirty-two teeth in the human mouth. Together they work to tear, crush and grind food to
mechanically digest food.
What are the four types of teeth, how many of each type are there and what does each type do? -
ANSWER- The teeth are composed of two chisel-shaped incisors for biting; one pointed canine
for tearing; two fairly flat pre-molars for grinding; and three flat molars for crushing.
What is the specific function of the salivary gland in the process of digestion? - ANSWER-
Food is mixed and moistened with saliva (from the salivary glands) containing enzymes that begin
the process of chemical digestion by breaking down starches.
Where are taste buds located? - ANSWER- Taste buds are found primarily on the tongue but
also on the surface of the mouth and the wall of the pharynx.
Describe the function of the tongue in the digestive process. - ANSWER- The tongue grips the
food, constantly repositions it between the teeth and forms it into a compact mass which is pushed
back to the pharynx to begin the process of swallowing.
What is a bolus? - ANSWER- A bolus is the compact mass of food formed by the combination
of chewing by the teeth and repositioning by the tongue.
List the 3 parts of the pharynx. - ANSWER- nasopharynx, oropharynx, laryngopharynx
Through what sections of the pharynx does air travel? Through what sections of the pharynx does
food travel? - ANSWER- Air enters the nose, continues through the nasopharynx, oropharynx
and the laryngopharynx. Air then enters the trachea on its way to the lungs. Food and liquid enter
the mouth, continue through the oropharynx and the laryngopharynx but then continue into the
esophagus.
What prevents food from entering the lungs and why is this necessary? - ANSWER- Food is
prevented from entering the larynx by the epiglottis, a flap of elastic cartilage which covers the
larynx when swallowing food or liquid.
Correct Answers With 100% Correct Answers | Latest 2025 Update.
Name the two main divisions of the digestive system organs. - ANSWER- The human digestive
organs can be divided into those of the alimentary canal and the accessory digestive organs.
Name the seven parts of the gastrointestinal tract. - ANSWER- The gastrointestinal tract is
composed of the mouth, pharynx, esophagus, stomach, small intestine, large intestine, and anus
Name the six digestive system accessory organs. - ANSWER- The accessory organs are the
teeth, tongue, gallbladder, salivary glands, liver and pancreas.
Review all the figures and diagrams, including the GI tract and accessory organs. - ANSWER-
see module
What structures respectively form these parts of the mouth?
a. Opening
b. Floor
c. Walls
d. Roof - ANSWER- a. Opening = Lips b. Floor = Tongue c. Walls = Cheeks d. Roof = Hard/soft
palates
List the two bones and the membrane to which the tongue is attached - ANSWER- The tongue
is attached to the hyoid bone and the mandible and the membranous lingual frenulum.
, How many teeth are there in an adult human and what do they do? - ANSWER- There are
thirty-two teeth in the human mouth. Together they work to tear, crush and grind food to
mechanically digest food.
What are the four types of teeth, how many of each type are there and what does each type do? -
ANSWER- The teeth are composed of two chisel-shaped incisors for biting; one pointed canine
for tearing; two fairly flat pre-molars for grinding; and three flat molars for crushing.
What is the specific function of the salivary gland in the process of digestion? - ANSWER-
Food is mixed and moistened with saliva (from the salivary glands) containing enzymes that begin
the process of chemical digestion by breaking down starches.
Where are taste buds located? - ANSWER- Taste buds are found primarily on the tongue but
also on the surface of the mouth and the wall of the pharynx.
Describe the function of the tongue in the digestive process. - ANSWER- The tongue grips the
food, constantly repositions it between the teeth and forms it into a compact mass which is pushed
back to the pharynx to begin the process of swallowing.
What is a bolus? - ANSWER- A bolus is the compact mass of food formed by the combination
of chewing by the teeth and repositioning by the tongue.
List the 3 parts of the pharynx. - ANSWER- nasopharynx, oropharynx, laryngopharynx
Through what sections of the pharynx does air travel? Through what sections of the pharynx does
food travel? - ANSWER- Air enters the nose, continues through the nasopharynx, oropharynx
and the laryngopharynx. Air then enters the trachea on its way to the lungs. Food and liquid enter
the mouth, continue through the oropharynx and the laryngopharynx but then continue into the
esophagus.
What prevents food from entering the lungs and why is this necessary? - ANSWER- Food is
prevented from entering the larynx by the epiglottis, a flap of elastic cartilage which covers the
larynx when swallowing food or liquid.
