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31 Cards in this Set

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Question
Answer
End of muscle attached to the least movable structure
origin
End of muscle attached to the more movable structure
insertion
Epicranial - frontalis
part of occipitofrontalis muscle
O: eyebrow and root of nose (masteoid process)
I: epicranial aponeurosis
A: surprise (wrinkles brow)
nerve: temporal of VII
artery: ophthalmic
None
Epicranial - occipitalis
O: occipital and temporal bone
I: epicranial aponeurosis
A: surprise
nerve: posterior auricular of facial
artery: occipital
None
Orbicularis oculi
O: orbital rim, frontal and maxillary bones
I: lateral region of eye, some encircle eye
A: closing eyelid
nerve: zygomatic branch of facial
artery: opthalmic and zygomatico-orbitla
antagonist is levator palpebrae superioris
Corrugator supercilii
O: frontal bone
I: above eyebrow
A: frowning (wrinkles forehead)
artery: opthalmic
nerve: temporal of facial
None
Orbicularis oris
O: encircle mouth
I: all around the mouth
A: closing or puckering lips
nerve: buccal branch of VII
artery: facial
None
buccinator
O: maxilla & mandible (alveolar processes) and pterygomandibular raphe
I: angle of mouth (fibers of obicularis oris)
A: chewing
nerve: buccal of VII
Artery: buccal
None
risorius
O: fascia superficial to masseter muscle
I: angle of mouth
A: smiling widely
nerve: facial (buccal)
artery: facial
None
levator labii superioris
O: maxilla
I: upper lip
A: raising upper lip
nerve: buccla of VII
artery: facial
None
levator labii superioris alaeque nasi
O: upper maxilla by nasal bones
I: ala of nose and upper lip
A: raising upper lip and dilating nostrils in a sneer
nerve: buccal of VII
None
zygomaticus major
O: anterior zygomatic bone (posterior to minor)
I: angle of mouth
A: smiling
nerve: buccal of VII
artery: facial
None
zygomaticus minor
O: zygomatic bone @ zygomaticomaxillary suture
I: upper lip
A: raising upper lip
nerve: buccal of VII
artery:facial
None
levator anguli oris
O: maxilla (just below the infraorbital foramen)
I: angle of mouth
A: smiling
nerve: zygomatic and buccal of VII
artery: facial and maxillary
None
depressor anguli oris
O: mandible
I: angle of mouth
A: frowning
nerve: mandibular branch of VII
Artery: facial
None
depressor labii inferioris
O: mandible
I: lower lip
A: lowering lower lip
nerve: mandibular of VII
artery: facial

it is located medial to Depressor anguli oris
None
mentalis
O: mandible
I: chin
A: raising chin and protruding lower lip
nerve: mandible branch of VII
artery: facial and maxillary
None
platysma
O: upper part of perctoralis and deltoid
I: mandible and muscles of mouth
A: grimacing
nerve: cervical branch of VII
artery: sub-mental branch of the facial
None
sternocleidomastoid
O: medial portion of clavicle and superior and lateral surfaces of sternum
I: mastoid process of temporal bone
A: 1 side contraction - head and neck bend to same side and face and front of neck rotate to opposite side, 2 sides contract - head flex at neck and extension at junction between head and neck
nerve: -accesory for motor
-cervical plexus sensory
None
trapezius
O: external surface of occipital bone and posterior midline of cervical and thoracic regions
I: lateral third of clavicle and parts of scapula
A: lift clavicle and scapula when shoulders are shrugged
None
masseter - superficial head
O: anterior two thirds of lower border of zygomatic arch
I: angle of mandible
A: elevation of mandible (during jaw closing)
nerve: masseteric of V3
artery: masseteric
None
masseter - deep head
O: posterior one third and medial surface of zygomatic arch
I: ramus of mandible
A: elevation of mandible (during jaw closing)
None
temporalis
O: temporal fossa
I: coronoid process of mandible
A: elevation of mandible (during jaw closing) and retraction of mandible (lower jaw backward)
nerve: V3
artery: deep temporal
None
medial pterygoid
O: medial side of lateral pterygoid of sphenoid bone
I: angle of mandible
A: protracts and elevates mandible, assists rotary movement
None
lateral pterygoid - superior head
O: greater wing of sphenoid bone
I: anterior portion of condylar neck
A: 1 side contraction - lateral deviation of mandible (shift lower jaw to opposite side), 2 side contraction - protrusion of mandible (lower jaw forward)
None
lateral pterygoid - inferior heads
O: lateral pterygoid plate from sphenoid bone
I: anterior portion of condylar neck & TMJ capsule
A: slight depression of mandible (during jaw opening), 1 side contraction - lateral deviation of mandible (shift lower jaw to opposite side), 2 side contraction - protrusion of mandible (lower jaw forward)
None
name 4 suprahyoid muscles
digastric
mylohyoid
geniohyoid
stylohyoid
None
name 4 infrahyoid muscles
sternothyroid
sternohyoid
omohyoid
thyrohyoid
None
digastric - anterior belly
O: intermediate tendon
I: medial surface of mandible
A: elevation of hyoid bone and larynx,
None
muscles that insert at the angle of the mouth
-zygomaticus major,
-depressor anguli oris,
-Levator anguli oris
-orbicularis oris