Oral and nasal cavities copy Flashcards
What are the two main parts of the oral cavity?
- Oral cavity proper
- Vestibule
What forms the roof of the oral cavity?
The maxilla and palatine bones
What muscles are included in the floor of the mouth?
- Mylohyoid
- Geniohyoid
- Anterior belly of digastric
What is the vermilion border?
The transitional zone between the skin and mucous membrane of the lips
What is the role of the buccinator muscle?
To push the cheek towards the teeth, preventing food from squeezing into the vestibule
What arteries supply the lips?
Upper and lower labial arteries (from facial)
What is the nerve supply to the muscles of the lateral walls of the oral cavity?
Facial nerve
Which nerve supplies general sensation to the anterior 2/3 of the tongue?
Lingual nerve (a branch of CN V)
What are the three regions of a tooth?
- Crown
- Neck
- Root
What are the two subgroups of tongue muscles?
- Intrinsic muscles
- Extrinsic muscles
Which nerve innervates all tongue muscles except the palatoglossus?
Hypoglossal nerve
What is the primary blood supply for the tongue?
Lingual artery
Fill in the blank: The duct of the _______ salivary gland enters the mouth near the upper 2nd molar tooth.
Parotid
What are the three pairs of large salivary glands?
- Submandibular
- Sublingual
- Parotid
What is the function of the paranasal sinuses?
To help moisten the surface of the nasal cavity and incoming air
What is the function of the conchae in the nasal cavity?
To swirl incoming air, slowing it down for warming and trapping dust
What are the components of the ‘VAN’ of the nasal cavity?
- Veins
- Arteries
- Nerves
True or False: The nasal cavity is bordered by the palatine bone on the roof.
False
What separates the left and right parts of the nasal cavity?
Nasal septum
What type of secretion does the sublingual gland produce?
Mucus
What is the primary function of saliva?
To moisten food and begin the process of digestion
What is the lymphatic drainage route for the tongue?
Towards the deep cervical nodes
What supplies the mucous membrane of the roof of the oral cavity?
Branches of the maxillary nerve
What is the primary role of the minor salivary glands?
To maintain oral hygiene by flushing the oral surfaces
