Muscle OIA Flashcards
Frontalis
O:
I:
A:
O: Epicranial aponeurosis (forehead)
I:Skin of forehead (across eyebrows)
A:Furrow brow
Occipitalis
O:
I:
A:
O:Superior nuchal line of occipital (back of head)
I:Epicranial aponeurosis
A:Unfurrow brow
Orbicularis oculi
O:
I:
A:
O:Medial orbital margin
I:eyelids
A:close eyelids
Orbicularis oris
O:
I:
A:
O:surrounding lips
I:Lips at corner of mouth
A:Close lips
Depressor anguli oris
O:
I:
A:
O:Body of mandible
I:Lips corner of mouth
A:Frowning
Depressor labii inferioris "Medial to depressor anguli oris" O: I: A:
O:Body of mandible
I:lower lip
A:depress lip
Levator labii superioris " muscle runs down the side of the nose" O: I: A:
O:Maxilla (infraorbital margin)
I:upper lip
A:Elevates upper lip
Zygomaticus Major (muscle is beneath zygomaticus minor) O: I: A:
O:Temporal process of zygomaitc bone (zygomatic arch)
I:Lips at corner of mouth
A:Smilling
Zygomaticus minor (superior to zygomaticus major) O: I: A:
O:Zygomatic bone (medial to major)
I:Lips at corner of mouth
A:Smiling
Buccinator (underneath Zygomaticus major) O: I: A:
O:Mailla and mandible
I:orbicularis oris
A:compress cheeks
ex;playing trumpet
Inferior rectus (looking down) O: I: A:
O; Spheroid bone around optic canal
I:inferior, medial surface of eye
A:eye looks down
Medial rectus (looking at closer objects) O: I: A:
O:sphenoid bone around optic canal
I:Medial surface of eyeball
A: eye rotates medially
Superior rectus (looking up) O: I: A:
O:Sphenoid bone around optic canal
I:Superior surface of eyeball
A:eye looks up
Lateral rectus (moves eye laterally) O: I: A:
O: Sphenoid bone around optic canal
I:Lateral surface of the eyeball
A:eye rotates laterally
Inferior oblique (underneath Inferior rectus) O: I: A:
O:Maxillary bone at anterior portion of orbit
I:Inferior, lateral surface of eyeball
A:eye rolls, looks up and the to the side
Superior oblique (Superior to superior rectus) O: I: A:
O:Sphenoid bone around optic canal
I:Superior, lateral surface of eyeball
A:Eye rolls, looks down and to the side
Masseter (Chewing muscles) O: I: A:
O: Zygomatic arch (temporal process of zygomatic bone and zygomatic process of temporal bone)
I:Ramus of mandible
A:Elevate mandible (Close jaw)
Temporalis
O:
I:
A:
O:Temporal bone
I: Coronoid process of mandible
A:Elevate mandible
Lateral pterygoid
-deep to masster ( has opposite action of the masseter, temporalis and medial pterygoid.
O:Pterygoid process of sphenoid bone
I: Mandible
A:Depress mandible
Medial pterygoid
O:
I:
A:
O:Pterygoid process of sphenoid bone
I: Mandible
A: Elevate Mandible
Genioglossus
O:
I:
A:
O:Body of mandible
I:Tongue
A:protract tongue (stinking tongue out)
Hyoglossus
O:
I:
A:
O:Hyoid
I:Tongue
A:Depress tongue
Styloglossus
O:
I:
A:
O:Styloid process of temporal
I:Tongue
A:Retract tongue
Sternocleidomastoid
O: has two heads
I:
A:
O: Sternal head: Manubrium
Clavicular head: Sternal end of clavicle
I: Mastoid process
A:Rotate or flex head and neck
Omohyoid
O:
I:
A:
O:Superior of scapula and clavicle
I:Hyoid
A:Depress hyoid and larynx
Diagastric
O:(has two heads)
I:
A:
O:Superior (posterior) belly
Inferior (anterior) belly
I:Hyoid
A: Depress mandible, elevate s hyoid
Sternohyoid
O:
I:
A:
O:Manubrium
I:hyoid
A:Depress hyoid and larynx
Sternothyroid
O:
I:
A:
O:Manubrium
I:Thyroid cartilage of larynx
A:depress hyoid and larynx
Stylohyoid
O:
I:
A:
O:Styloid process of temporal
I:Hyoid
A:Elevate hyoid and larynx
Spelnius capitis
O:
I:
A:
O:Cervical & thoracic spinous process
I:Mastoid process of temporal nuchal lines of occipital
A:Extend neck
Scalenes (anterior to spelnius capitis) O: I: A:
O:cervical transverse process
I:ribs 1&2
A:elevate ribs “pull ribs up when breathing”
Diaphragm
O:
I:
A:
O:Xiphoid, ribs, & lumbar vertebrae
I:Central tendon at the inferior boundary of the thoracic cavity
A:Expand thoracic cavity
External intercostals
O:
I:
A:
O: Inferior border of ribs
I:Superior border of ribs
A:Elevate ribs( opposite action interal intercostals)
Internal intercostals (deeper to External intercostals) O: I: A:
O:Superior border of ribs
I:Inferior border of ribs
A:Depress ribs( opposite action than external intercostals)
Rectus abdominis( our 6 packs ;) )
O:
I:
A:
O:pubic symphysis
I:xiphoid and costal cartilages
A:Flex vertebral column (situp)
External abdominal oblique (On top of the internal abdominal oblique muscle) O: I: A:
O:Ribs 5-12
I: Iliac crest and linea alba
A:Flex,rotate vertebral column
Internal abdominal oblique (Underneath of the External abdominal oblique muscle) O: I: A:
O:Iliac crest and thoracolumbar fascia
I:Costal cartilages and linea alba
A:Flex, rotate vertebral column
Transversus abdominis (located underneath the obliques) O: I: A:
O:Ribs 7-12, iliac crest, thoracic and lumbar spinous process
I:Linea alba and pubis
A:Compress abdomen
Rhomboidius minor (superior to the Rhomboidius Major) O: I: A:
O: Spinous process of C7-T1
I: Medial border of the scapula
A: Rotate scapula
Rhomboidius major
O:
I:
A:
O:Spinous processes of T2- T5
I:Medial border of scapula
A:Rotate Scapula