II. Mouth Anatomy

Task # 3
1. Take a photo of the internal mouth. Include both the upper and lower jaws. Place 6 of the following labels on your diagram. It is mandatory to place the first three labels.
  • epiglottis
  • glottis
  • gullet
  • nasopharnyx
  • soft palate
  • hard palate
  • nare
  • tongue
  • taste buds
  • vestibule
  • uvula
2. Make a glossary of the terms found above. Include a definition that explains the function(s) of the structures, openings, etc.


Epiglottis-An elastic structure that folds over the glotis and prevents food and liquid from entering the tracea
Glottis-The opening between the vocal cords and the upper part of the larynx
Gullet-The throat
Nasopharynx-The part of the pharynx above the soft palate that is continuous with the nasal passages
Soft palate-Soft tissue constituting the back of the root of the mouth
Hard palate-A thin horizontal bony plate of the skull. The hard plate is located in the root of the mouth
Nare-A nostril
Tongue-A muscular organ that is attached to the bottom of the mouth. This is used for taste and an aid for chewing and swallowing
Taste buds-A numerous number of flask-shaped receptors that are used for taste
Vestibule-An oval cavity located in the inner ear. With the semicirular canals together it will make up the organ that maintains equilibrium in most vertebretes
Uvula-A small, conical, fleshy mass of tissue suspended from the center of the soft palate

3. The glottis, gullet and epiglottis are located very close to each other. Explain the relationship between the structure and the openings.
The glottis is a small opening that is covered by the epiglottis. The gullet is the tube behind them. The epiglottis is the tube that leads to the lungs and the glottis leads to the stomach. The gullet is the throat.
4. Discuss the tongue and the location of the taste buds. A picture and labels needs to be included.
As seen in the picute above, the tounge is located on the lower jaw of the pig. The taste buds are located around the edge of the tounge.
5. Which jaw(s) have teeth in the pig? When do the teeth start erupting?
Our pig has teeth on both jaws. Teeth start erupting when the pig is around six months old.

Task #4
1. Take a photo of the neck area showing the exposed salivary glands. Label the following:
  • parotid gland
  • submaxillary gland
  • Wharton's duct.
2. Create a chart that has 3 columns. Include the following column headings:
  • Structure
  • Description(What the structure looks like)
  • Function(relate information:enzymes released/foods broken down/transports from/to, etc.)
Parotid Gland
Small and very squishy looking
Relaeases enzymes into the mouth to help break down food
Submaxillary Gland
Lima bean shaped gland
Releases saliva into the mouth to help break down food and help it swallow to transport it down the gullet
Wharton's duct
Small tube that comes out from the Submaxillary gland
Tube that the saliva travels to to get through to the mouth
3. Compare and contrast the mouth anatomy of the clam, crayfish, starfish and the pig.
The clam, crayfish, and starfish all sucked in their food and swallowed. The pig puts food in its mouth and then chews. Once the food is chewed it swallows and the food goes through the digestive system.