Nasal Cavity And Paranasal Sinuses Flashcards
What connects the nasal and oral cavities
Nasopharynx
Uvula
Fleshy projection at back of throat
How do the soft palate an uvula protect nasal cavity
Move together to close off the connection between oral and nasal cavity when eating to prevent food from entering nasal cavity.
What system is the nasal cavity part of
Respiratory system
Part of the nasal cavity most exposed to the environment
Vestibule - lies just posterior to the nostrils
Structure of vestibule and its function
Stratified squamous epithelium
Stiff hairs; Vibrissae, embedded in cell lining
Covered in thick mucous
Forms a protective barrier
Structure and function of the respiratory region of the nasal cavity
Cilliated pseudo-stratified epithelium
Contains goblet cells that secrete mucous to form mucous membrane
Where is the olfactory region located in the nasal cavity
Top part of nasal cavity near septum
What lines the olfactory region in nasal cavity
Olfactory cells and olfactory mucosa
Structure and function of olfactory region in nasal cavity
House millions of cilia that contain olfactory receptor proteins; responsible for sense of smell
What forms the medial wall of nasal cavity
Perpendicular plate of ethmoid bone
Vomer
Septum cartilage
What makes up the superior border of the nasal cavity
Nasal bones
Lower part of frontal bone
Cribriform plate of ethmoid bone
Sphenoid bone
What makes up the lateral walls of the nasal cavity
Lower parts of nasal bones
Cartilage
Ethmoid bone
Perpendicular plate of the palatine bone
Medial plate of pterygoid process; sphenoid
Medial surface of the lacrimal and maxillary
Inferior nasal concha
What forms the floor of the nasal cavity
Palatine process of maxilla
Horizontals plates of palatine bones
What borders with the posterior border of nasal cavity
Maxilla
Palatine
Ethmoid
Sphenoid
Lacrimal
Inferior nasal concha
