Digestive System Flashcards
How many teeth does the human adult have?
32
How many teeth does the human baby have?
20
What is the function for molars? And how many are there?
Mashing and grinding; 12
What is the function for canine? And how many are there?
Tearing; 4
What is the function of the premolars? And many are there?
Mashing and tearing; 8
What is the function of the incisors? And how many are there?
Cutting; 8
What is the crown?
Above gumline
What is the root?
Below gumline
What is the enamel made of?
Hard calcium
What is the pulp?
Marrow-like tissue
What is the root canal?
Nerves & blood vessels
What is the hard palate for?
Mashing food
What is the soft palate for?
Assist in swallowing
What is the significance of the mastication?
To increase the surface area to volume ratio.
What are three types of salivary glands?
- Parotids
- Sublingual
- Submandibular
What is the purpose of saliva?
- Moisture
- Contains enzyme amylase for starch digestion
What is the involuntary smooth muscle contractions that transport food through the digestive tract?
Peristalsis
What are the three stages of swallowing?
- Voluntary stage
- Pharyngeal Stage
- Esophageal Stage
What are the parotids?
Largest cheeks
What is the sublingual?
Under front of tongue
What is the submandibular?
Under back of tongue
What stage of swallowing involves the bolus moved to the back of the mouth by the tongue?
Voluntary Stage
What stage of swallowing involves the trachea closed by epiglottis and food enters esophagus?
Pharyngeal Stage
What stage of swallowing involved the peristalsis moves bolus through cardiac sphincter into the stomach?
Esophageal Stage
