16.2 Mouth Flashcards
What is the other name of the mouth?
Oral cavity
What forms the opening of the mouth
muscular lips
What is the function of lips?
It helps procure, guide, and contain the food in the mouth
The palate forms the?
arched roof of the oral cavity
What is the function of the palate?
It separates the mouth from the nasal passage allowing for breathing and chewing or sucking to take place simultaneously
Where is the uvula located
it hangs from the palate in the rear of the throat
What is the function of the uvula?
To close the nasal passage during swallowing
The floor of the oral cavity is formed by?
the tongue
What type of muscle does the tongue have?
Skeletal muscle (voluntary)
What is the function of the tongue?
It guides food within the mouth during chewing and swallowing and also plays a role in speech.
Where are the taste buds located and what are their function?
they are located on the tongue and have a role of providing the sense of taste.
What is the function of teeth?
To mechanically break down food
What is the first step in the digestion process and explain it
Mastication (chewing): mouth motility that involves tearing, slicing, grinding and mixing of ingested food by the teeth.
where are teeth embedded and protruding from?
the jawbones
What is occlusion?
it is how well the upper and lower teeth fit together when the jaw is closed.
what is the most important factor when determining the efficiency of chewing?
occlusion
What is malocclusion?
It is when the upper and lower teeth do not make proper contact with one another hence they cannot accomplish normal cutting and grinding.
What causes malocclusion and what can fix it?
It can be caused by overcrowding of teetgh or displacement of the jaw. This can be rectified by braces
What covers the exposed part of the tooth and is considered the hardest structure of the body?
Enamel
Enamel cannot be regenerated so any teeth defects that occur in the enamel must be………….
patched by artificial filings or else the surface will continue to erode into the underlying living pulp.
The act of chewing can be voluntary but……….
Most chewing during a meal is a rhythmic reflex-like activity accomplished without conscious effort.
What are the three functions of chewing?
- To mechanically break down food into smaller pieces to facilitate swallowing and to increase the food surface area on which salivary enzymes can act.
- To mix food with saliva
3.To expose food to taste buds
What are the 2 functions of taste bud stimulation?
- gives the pleasurable sensation of taste
- it reflexly increases salivary,gastric,pancreatic, and bile secretions to prepare for the arrival of food
What type of digestion begins in the mouth due to salivary amylase?
Carbohydrate digestion