Question

digestive system exhibition lab
station 6: anatomy

1. ______
2. ______
3. ______
4. ______
5. ______
6. ______
7. ______
8. ______
9. ______
10. ______
11. ______

(diagram of digestive system with labels: oral cavity, uvula, tongue, common bile duct, transverse colon, ascending colon, descending colon, cecum, appendix, parotid, sublingual, submandibular, duodenum, jejunum, ileum, pancreatic duct)
station 7: the mouth
roles the mouth plays in digestion:

1. the food is ____ or ____ to body temperature.
2. the teeth ____ and __ the food into ____
3. the tongue ____ the food to the back of the throat for ____
4. ____ moistens the food and begins to ____

what are taste buds?
approximately how many taste buds are on your tongue?
station 7 continued
do not chew!
after a few seconds, what happens to the cracker? ______
how does the cracker begin to taste?
station 7: the mouth (continued)
once the mouth has digested food, the food is called a ______.
incisors are used for ____ and ____.
canines are used for ____ and ____.
molars and premolars are used for ______.
label the teeth
what is the enamel made out of?
what is the living part of the tooth called?
(diagrams of a tooth and a dental arch with numbered teeth)

Explanation:

Step1: Label Digestive Anatomy

1. Oral cavity
2. Liver
3. Gallbladder
4. Large intestine (colon)
5. Rectum
6. Salivary glands (Parotid, Sublingual, Submandibular)
7. Esophagus
8. Stomach
9. Pancreas
10. Small intestine (Duodenum, Jejunum, Ileum)
11. Anus

Step2: Station 7 (Mouth Roles)

1. The food is warmed or cooled to body temperature.
2. The teeth grind and break the food into small pieces/bolus.
3. The tongue moves the food to the back of the throat for swallowing.
4. Saliva moistens the food and begins to break down carbohydrates (starches).

• What are taste buds? Sensory organs on the tongue that detect taste (sweet, sour, salty, bitter, umami).
• Approximately how many taste buds are on your tongue? ~10,000

Step3: Station 7 Continued

• After a few seconds, what happens to the cracker? It softens and begins to dissolve.
• How does the cracker begin to taste? It starts to taste sweet (from saliva breaking down starch into sugar).

Step4: Station 7 (Mouth, Continued)

• Once the mouth has digested food, the food is called a bolus.
• Incisors are used for biting and cutting.
• Canines are used for tearing and piercing.
• Molars and premolars are used for grinding and crushing.
• What is the enamel made out of? Hard calcium phosphate mineral.
• What is the living part of the tooth called? Pulp (contains nerves and blood vessels).

Answer:

Station 6: Anatomy Labels

1. Oral cavity
2. Liver
3. Gallbladder
4. Large intestine (colon)
5. Rectum
6. Salivary glands (Parotid, Sublingual, Submandibular)
7. Esophagus
8. Stomach
9. Pancreas
10. Small intestine (Duodenum, Jejunum, Ileum)
11. Anus

Station 7: The Mouth

1. warmed; cooled
2. grind; break; small pieces/bolus
3. moves; swallowing
4. Saliva; break down carbohydrates (starches)

• What are taste buds? Sensory organs on the tongue that detect the five basic tastes (sweet, sour, salty, bitter, umami).
• Approximately how many taste buds are on your tongue? ~10,000

Station 7 Continued

• After a few seconds, what happens to the cracker? It softens and starts to dissolve.
• How does the cracker begin to taste? It takes on a sweet flavor (as saliva breaks starch into sugar).

Station 7: The Mouth (Continued)

• Once the mouth has digested food, the food is called a bolus.
• Incisors are used for biting and cutting.
• Canines are used for tearing and piercing.
• Molars and premolars are used for grinding and crushing.
• What is the enamel made out of? Calcium phosphate (hard mineral)
• What is the living part of the tooth called? Pulp