Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/29

Click to flip

29 Cards in this Set

  • Front
  • Back
End of muscle attached to the least movable structure
origin
End of muscle attached to the more movable structure
insertion
Epicranial - frontal belly
O: epicranial aponeurosis

I: eyebrow and root of nose

A: surprise
Epicranial - occipital belly
O: occipital and temporal bone

I: epicranial aponeurosis

A: surprise
Orbicularis oculi
O: orbital rim, frontal and maxillary bones

I: lateral region of eye, some encircle eye

A: closing eyelid
Corrugator supercilii
O: frontal bone

I: eyebrow

A: frowning
Orbicularis oris
O: encircle mouth

I: angle of mouth

A: closing or pursing lips
buccinator
O: maxilla, mandible and pterygomandibular raphe

I: angle of mouth

A: chewing
risorius
O: fascia superficial to masseter muscle

I: angle of mouth

A: smiling widely
levator labii superioris
O: maxilla

I: upper lip

A: raising upper lip
levator labii superioris alaeque nasi
O: maxilla

I: ala of nose and upper lip

A: raising upper lip and dilating nostrils in a sneer
zygomaticus major
O: zygomatic bone

I: angle of mouth

A: smiling
zygomaticus minor
O: zygomatic bone

I: upper lip

A: raising upper lip
levator anguli oris
O: maxilla

I: angle of mouth

A: smiling
depressor anguli oris
O: mandible

I: angle of mouth

A: frowning
depressor labii inferioris
O: mandible

I: lower lip

A: lowering lower lip
mentalis
O: mandible

I: chin

A: raising chin and protruding lower lip
platysma
O: clavicle and shoulder

I: mandible and muscles of mouth

A: grimacing
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
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
masseter - superficial head
O: anterior two thirds of lower border of zygomatic arch

I: angle of mandible

A: elevation of mandible (during jaw closing)
masseter - deep head
O: posterior one third and medial surface of zygomatic arch

I: ramus of mandible

A: elevation of mandible (during jaw closing)
temporalis
O: temporal fossa

I: coronoid process of mandible

A: elevation of mandible (during jaw closing) and retraction of mandible (lower jaw backward)
medial pterygoid
O: pterygoid fossa of sphenoid bone

I: angle of mandible

A: elevation of mandible (during jaw closing)
lateral pterygoid - superior head
O: greater wing of sphenoid bone

I: pterygoid fovea of mandible

A: 1 side contraction - lateral deviation of mandible (shift lower jaw to opposite side), 2 side contraction - protrusion of mandible (lower jaw forward)
lateral pterygoid - inferior heads
O: lateral pterygoid plate from sphenoid bone

I: pterygoid fovea of mandible

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)
name 4 suprahyoid muscles
digastric
mylohyoid
geniohyoid
stylohyoid
name 4 infrahyoid muscles
sternothyroid
sternohyoid
omohyoid
thyrohyoid
digastric - anterior belly
O: intermediate tendon

I: medial surface of mandible

A: elevation of hyoid bone and larynx,