Nasal cavity, Sinuses and facial nerve Flashcards
What are the 5 branches of facial nerves?
- Temporal branch
- Zygomatic branch
- Buccal branch
- Mandibular branch
- Cervical branch
Where does the main branch of the facial nerve exit?
Through the stylomastoid foramen
Which cranial nerve is the facial nerve?
7th
What does the motor innervation of the facial nerve do?
innervates the muscles of facial expression
What are the 3 categories the oesophagus can be subdivided into in the neck?
- Nasopharnyx
- Oropharynx
- Laryngopharnyx
Where is the nasopharynx located?
Posterior to the (choncha) nasal cavity
Where is the oropharynx located?
Posterior opening of the oral cavity
Where is the laryngopharnyx located?
Superior to the larnyx
It is where food and air passes.
What are the 2 groups of muscles in the pharynx?
- Constrictor muscles
2. Longitudinal muscles
What is the orientation of the Constrictor muscle?
Fibres are organised in circular direction relative to the pharyngeal wall
What is the orientation of the longitudinal muscle?
Fibres are orientated vertically
What are the names of the 3 constrictor muscles?
- Superior constrictor muscle
- Middle constrictor muscle
- Inferior constrictor muscle
They overlap each other
What do the constrictor muscles do?
Move food from the pharynx to the oesophagus
What nerve innervated the constrictor muscle?
Vagus nerve
Where is the nasolacramal duct located?
Below the concha in the maxillary sinus
