Muscles - FACE Flashcards
WHAT ARE THE MOM
masseter
temporalis
lateral pterygoid
medial pterygoid
WHAT ARE THE EXTRA MOM
supra hyoid
infra hyoid
WHAT ARE THE SUPRAHYOID MUSCLES
geniohyoid
mylohyoid
stylohyoid
digastric
WHAT ARE THE INFRAHYOID MUSCLES
sternothyroid
sternohyoid
omohyoid
thyrohyoid
WHICH MUSCLES DEPRESS THE JAW
lateral pterygoid inrfrahyoid muscles : sternohyoid thyrohyoid omohyoid
MUSCLES WHICH CONTROL THE BOLUS AND PREVENT SPILLAGE
orbicularis oris
buccinator
WHAT ARE THE MOVEMENTS OF THE TMJ
rotation 20mm
translation >2mm
WHERE ARE THE CONDYLES IN THE TRANSLATION MOVEMENT
out their fossa and along the articular eminences
WHAT ARE THE INSTRINSIC MUSCLES OF THE TONGUE
longitudinal
vertical
transverse
WHAT IS THE FUNCTION OF THE INSTRINIC TONGUE MUSCLES COMPARED TO THE EXTRINSIC
they both alter the shape
extrinsic also alter the position
WHAT ARE THE EXTRINSIC MUSLCES OF THE TONGUE
styloglossus
palatoglossus
genioglossus
WHAT AFFECTES THE MAX BITING FORCE
muscle fibre type
muscle mass
parafunction
WHAT IS THE MAX BITING FORCES OF A MOLAR
200-700N
WHY ARE MOLARS THE STRONGEST BITNG FORCE
big root
closest to TMJ
WHERE ARE THE CONDYLES IN THE ROTATION MOVEMENT
in their fossa
ORIGIN OF THE MASSETER
zygomatic arch
INSERTION OF THE MASSETER
lateral border and corner of mandible
ACTION OF THE MASSETER
elevates
HOW TO TEST THE MASSETER
1 finger intraoral and 2 extraoral, ask them to clench, its sore in those who have clenching habit
ORIGIN OF THE TEMPORALIS
floor of infratemporal fossa
INSERTION OF THE TEMPORALIS
ant border and coronoid process of mandbile
ACTION OF TEMPORALIS
elevates and retracts
HOW TO TEST THE TEMPORALIS
palpate the origin and ask them to clench, feel from the middle of the superior and inferior temporal fossa, forward to the supra-orbital area
tender in those with bruxism
WHAT IS BRUXISM
clenching and grinding habit
ORIGIN OF THE LATERAL PTERYGOID
lateral surface of the lateral pterygoid plate
INSERTION OF THE LATERAL PTERYGOID
superior head - intra-articular disc
inferior head - anterior border of condyle
INSERTION OF THE LATERAL PTERYGOID
superior head - intra-articular disc
inferior head - anterior border of condyle
ACTION OF THE LATERAL PTERYGOID
protrudes and laterally deviates
(superior head)
depresses
(inferior head)
HOW TO TEST THE LATERAL PTERYGOID
cant palpate so test response to resisted movement by holding jaw and then getting them to move it
tender = if this hurts
ORIGIN OF THE MEDIAL PTERGOID
deep head = medial surface of the lateral pterygoid plate
superficial head = tuberosity of the maxilla
INSERTION OF THE MEDIAL PTERYGOID
medial surface and angle of mandible
ACTION OF THE MEDIAL PTERYGOID
elevates and protrudes
HOW TO TEST THE MEDIAL PTERGOID
cant
too deep and doesn’t respond to resisted movement
WHICH IS THE ONLY MUSCLE WHICH RETRACTS THE MANDIBLE
temporalis
WHICH MUSCLES PROTRUDE THE MANDIBLE
medial and lateral pterygoid
WHICH MUSLCES ELEVATE THE MANDIBLE
masseter
temporalis
medial pterygoid
WHICH MUSCLES DEPRESS THE MANDIBLE
lateral pterygoid
omohyoid
thyrohyoid
sternohyoid
