Chpt. 13 (TMJ and Skull) Flashcards
(29 cards)
What are 2 bones that from the zygomatic arch
Temporal and Zygomatic bone
What are the 4 muscles that make up the TMJ (temporal mandible joint) ?
- Temporalis
- Masseter
- Medial pterygoid
- Lateral pterygoid
masseter
What is the OINA for the Masseter?
O: Zygomatic arch
I: ramus of the mandible
*Nerve: CN 5= trigeminal nerve
A: elevation and protrusion
What is the OINA for the Temporalis?
O: temporal fossa
I: corocoid process
Nerve: CN V=trigeminal nerve
A: elevation of mandible
What is the OINA of Pterygoids?
Not that important
O: Sphenoid bone
I: mandible
Nerve: trigeminal
A:(CN V) protrude the jaw
TMJ will go away when working on what as a PT?
Posture (because mandible tends to protrude out)
What are the 8 bones on the skull?
- Temporal
- Parietal
- Frontal
- Occipital
- Zygomatic/arch
- Maxilla
- Mandible
- Nasal
What is the nerve and action of Occipital Frontalis?
Fascial (C7)
Action gives you “surprised look”=raised eyebrows
What is the nerve and action of Corrugator?
- between eyebrows
- draws the eyebrows together
- frowning
What is the action for the Orbicularis oculi
(surrounds eyes)
- closes the eyelid
- winking
What is the action for Risorius = “rises”
(extends diagonally from the corners of the mouth)
- draws the mouth corners outwards
- smiling
What is the action for Buccinator
(found inside the cheeks)
- compresses the cheeks
- blowing
What is the action for Zygomaticus
(extends diagonally from the corners of the mouth)
- Lifts the mouth corners, upwards and outwards
- smiling & laughing
What is the action for Orbicularis oris
(surrounds the mouth)
- purse the lips, and closes the mouth
- pouting and kissing
What is the action for Mentalis
(around the chin)
- raises the lower lip; chin wrinkles
- “doubt facial” expression
What is the action for Platysma
- sides of the neck
- draws down the mouths corners downwards and backwards
- “scared/ frightened” (fear, horror)
What is the nerve that is responsible for the whole face?
C7
What is the nerve responsible for the TMJ?
C5
What are the 10 muscles for the Facial expressions (TMJ)?
- Occipital-frontalis
- Corrugator
- Orbicularis oculi
- Risorius
- Buccinator
- Zygomaticus
- Orbicularis oris
- Mentalis
- Depresor labii
- Platysma
What are the 5 bone markings in the face?
- Mastoid process
- Corocoid process
- Zygomatic arch
- Styloid process
- Occipital protuberance
What are the 5 movements of the mandible?
- Elevation
- Depression
- Protraction
- Retraction
- Lateral gliding
Where is a common source of pain on the face?
TMJ (Temporal Mandible Joint)
What are the 4 landmarks the mandible?
- Corocoid process
- Ramus
- Head and neck
- Mandibular notch
What is the action of th
This muscle is found around the cheek area, it extends from the zygomatic bone to the mandible
It clenches the teeth, closes and raises the lower jaw
