Face and Parotid Flashcards
Buccinator
ATTACHMENTS- from alveolar processes of the maxilla & mandible, pterygoid hamulus & pterygomandibular raphe to the buccal angle
FUNCTION- compresses cheek
INNERVATION- buccal branch of the facial n.
Depressor anguli oris
ATTACHMENTS- from mandible to buccal angle
FUNCTION- depresses buccal angle laterally
INNERVATION- buccal & mandibular branch of the facial n.
Frontalis
ATTACHMENTS- from the superficial fascia of the eyebrows to the epicranial aponeurosis
FUNCTION- protracts the scalp or elevates eyebrows & nose
INNERVATION- temporal branch of the facial n.
Levator labii superioris
ATTACHMENTS- from the inferior orbital margin to the lateral aspect of the upper lip
FUNCTION- raises & everts upper lip
INNERVATION- buccal & zygomatic branches of the facial n.
Nasalis
ATTACHMENTS- from the maxilla lateral & inferior to the nasal notch to the bridge & ala of the nose
FUNCTION- transverse fibers compress & alar fibers widen the nasal aperture
INNERVATION- buccal branch of facial n.
Orbicularis oculi
ATTACHMENTS- from orbital margin & medial palpebral lig. to superficial fascia of the eyelid
FUNCTION- a palpebral sphincter (closes eyes)
INNERVATION- temporal & zygomatic branches of the facial n.
Orbicularis oris MOUTH
ATTACHMENTS- from the angle of the mouth to the superficial fascia of the upper lip
FUNCTION- an oral sphincter (closes mouth)
INNERVATION- buccal & mandibular branches of the facial n.
Platysma
ATTACHMENTS- from the lower border of the mandible to the superficial fascia of the skin of the neck overlying the clavicle
FUNCTION- wrinkles the anterior nuchal skin
INNERVATION- cervical branch of the facial n.
Zygomaticus major
ATTACHMENTS- from zygomatic bone to angle of the mouth
FUNCTION- raises the buccal angle
INNERVATION- buccal & zygomatic branches of the facial n.
What facial expression does Occipitofrontalis do?
raising eyebrows
What facial expression does Orbicularis oculi do?
closing eye
What facial expression does Levator labii superioris + alar part of nasalis do?
flaring nostrils
What facial expression does buccinator and orbicularis oris do?
puffing the cheeks
What facial expression does zygomaticus major and minor do?
smile
What facial expression does levator labii superior + depressor labii do?
showing sadness
What facial expression does risorius + levator labii superiorious + depressor labii inferioris do?
showing sadness
What facial expression does orbicularis oris do?
pucker the lips
What facial expression does depressor anguli oris do?
frown
What facial expression does platysma do?
conveying tension or stress
Which bones form the medial wall of the orbit?
Ethmoid bone and Lacrimal bone
Which bones form the floor of the orbit?
maxilla and zygomatic bone
Which bones form the lateral wall of the orbit?
Greater wing of sphenoid bone and zygomatic bone
What forms the openings of the orbit?
- optic canal (sphenoid bone)
- superior orbital fissure
- inferior orbital fissure
What are the sinus cavities of the skull?
The sinuses are air filled cavities that are lined by a mucus membrane
-they can be the site of pain or infection
Where are the sinus cavities of the skull?
Frontal sinus
Ethmoid sinus
maxillary sinus
What are the contents and function of the orbit?
Quadrilateral pyramids
contents: eyeball "globe" vessels nerves muscles orbital fat connective tissue
Which bones form the roof of the orbit?
Frontal bone and lesser wing of sphenoid.
