30 Questions
Which of the following is NOT a function of the oral cavity and teeth?
Immune protection
Which of the following is responsible for the mechanical digestion of food in the oral cavity?
Teeth
Which of the following is NOT a component of saliva secreted by the oral cavity and salivary glands?
Enzymes
Which of the following separates the oral cavity from the nasal cavity?
Palate
How many permanent teeth are there in total?
32
Which division of the trigeminal nerve innervates the mandibular teeth?
CN V3
Which muscles are involved in the chewing (mastication) process?
Temporalis and Masseter
Which muscle is responsible for protruding and abducting the mandible to the opposite side of elevation?
Lateral pterygoid
Which muscle is responsible for elevating, protruding, and abducting the mandible to the opposite side?
Medial pterygoid
Which muscle is responsible for protruding and depressing the tongue?
Genioglossus
Which muscle is responsible for retracting and elevating the tongue?
Styloglossus
Which muscles elevate and tense the soft palate during swallowing to prevent food from moving into the nasopharynx?
Levator veli palatini (LVP)
Which muscles depress the palate and narrow the opening to the oropharynx?
Palatopharyngeus (PP)
Which muscles are responsible for chewing and breathing at the same time?
Palatoglossus (PG)
Which nerve innervates all the muscles of the pharynx except the tensor veli palatini?
CN X
What are the main components of saliva secreted by the oral cavity and salivary glands?
Mucus, water, ions, small molecules, enzymes, etc.
What is the function of the oral cavity and teeth?
Ingestion of food and liquid, taste, mixing of food and saliva, digestion initiation, immune protection, speech, non-verbal communication, breathing, etc.
What is the sensory innervation of the teeth?
Taste buds on the tongue
What are the muscles responsible for elevating and tensing the soft palate during swallowing?
levator veli palatini (LVP) and tensor veli palatini (TVP)
What is the function of the palatoglossus and palatopharyngeus muscles?
depressing the palate and narrowing the opening to the oropharynx
Which nerve innervates all the muscles of the pharynx except the tensor veli palatini?
vagus nerve (CN X)
How many parts does the pharynx have?
3
What are the actions of the lateral pterygoid muscle at the temporomandibular joint?
Protrusion and abduction to the opposite side of elevation.
What are the actions of the medial pterygoid muscle at the temporomandibular joint?
Elevation, protrusion, and abduction to the opposite side.
What are the actions of the genioglossus muscle?
Protrusion and depression of the tongue.
What is the motor innervation of the tongue?
CN XII (hypoglossal nerve), except for the palatoglossus muscle which is innervated by CN X (vagus nerve).
What is the function of the oral cavity?
The oral cavity functions in the mechanical digestion of food and the initial breakdown of carbohydrates through the action of salivary amylase.
What separates the oral cavity from the nasal cavity?
The hard and soft palate separate the oral cavity from the nasal cavity.
How many permanent teeth are there in total?
There are a total of 32 permanent teeth, with 8 teeth in each quadrant of the maxilla and mandible.
Which muscles are involved in the movement of the temporomandibular joint (TMJ)?
The muscles of mastication, including the temporalis, masseter, medial pterygoid, and lateral pterygoid, are involved in the movement of the temporomandibular joint (TMJ).
Test your knowledge of the muscles of mastication and their actions at the temporomandibular joint (TMJ). Analyze force vectors involved in elevation/depression, abduction/adduction, protrusion/retraction. Learn about the specific actions of the lateral and medial pterygoid muscles.
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