Muscles Of Facial Expression Flashcards
What is the function of the occipitofrontalis
To raise the eyebrows
What are the two “bellies” of the occipitofrontalis called?
The frontal belly (frontalis)
The occipital belly (occipitalis)
What is the circular muscle around the eye called
Orbicularis oculi
What is the major action of the orbicularis oculi
Closing the eye
What is the muscle around the lips called
Orbicularis oris
What is the major action of the orbicularis oris?
Puckering of the lips
Important in speech production
What is the function of the zygomaticus major
Smiling (elevating corner of the lips)
What is the function of the platysma
Depression of the mandible
Depresses corners of lips
“Grimace face”
What are the major functions of the nasalis muscles
Upper Region: compresses bridge of nose
Lower region: flares nostrils
What is the function of the buccinator
Compressed your teeth against your teeth
Eg for whistling, playing an instrument maybe
What are the 5 sets of branches of the parotid gland called
Temporal branches Zygomatic branches Buccal branches Mandibular branches Cervical branches
Which nerve is the most important in providing general sensory supple to the facial region
Cranial nerve V: the trigeminal nerve
What are the 3 main divisions of the trigeminal ganglion called
The ophthalmic nerve (V1)
The maxillary nerve (V2)
The Mandibular nerve (V3)
Do the branches of the VII nerve supply the parotid gland?
No
They only pass through
What problems can arise when you are giving an inferior alveolar nerve block?
If you push the needle too far then you could anaesthise the parotid gland and temporarily paralyse the face
