Lecture 1: Mastication And Swallowing Flashcards
What ossifications form flat bones and irregular bones of the skull?
Flat = intramembranous ossification Irregular = endochondral ossification
Why do we have some pneumatised bones in the skull?
Pneumatised bones are bones with air spaces so they reduce weight and add resonance to our voice.
Which process of the mandible has a head and neck?
The Condylar process
Which fossa does the condylar process of the mandible fit into?
The mandibular fossa.
Which muscle of mastication has a distinctive fan shape?
Temporalis
Which muscle of mastication is the most powerful elevator?
Masseter
Why does the medial pterygoid assist in side to side movement?
It sits at a slight angle as it sits inside the mandible, so when only one side contracts it results in sideways movement.
Which muscle of mastication depresses the mandible?
Lateral pterygoid
How many pharyngeal constructors are there and what are they?
Three. Superior, middle and inferior.
Which cranial nerve supplies the pharyngeal constrictors?
Vagus nerve
Which pharyngeal elevator draws the soft palate downwards? What else does it do?
Palatopharyngeus. It also elevates the pharynx and larynx.
Which is the only pharyngeal muscle supplied by the glossopharyngeal nerve? And what does it do?
Stylopharyngeus. It elevates the pharynx and the larynx.
Where does the salpingopharyngeus originate from?
The auditory tube (salpingo is Greek for trumpet, hence tube)
Which muscle supports the floor of the mouth?
Mylohyoid
How does the anterior belly of the digastric muscle open the mouth?
By lowering the mandible
