Anatomy of head,neck,trunk Flashcards
(30 cards)
Orbicularis oculi - origin
Medial margin of the orbit
Orbicularis oculi - insertion
Skin of the eyelid
Orbicularis oculi - actions
close the eye
Orbicularis Oris - origin
Maxilla and mandible
orbicularis Oris -insertion
skin at the corner of the mouth
orbicularis Oris - actions
Closes the lips
buccinator - origin
maxilla and mandible
buccinator - insertion
fibres of the orbicularis Oris
buccinator - actions
compresses the cheek and thus allows suckling
masseter - origin
zygomatic arch
masseter - insertion
mandible
masseter - actions
elevates the mandible
temporalis -origin
temporal bone
temporalis - insertion
mandible
temporalis -actions
Elevates and retracts the mandible
sternocleidomastoid - origin
two heads
Sternum and sternal end of clavicle
Sternocleidomastoid - insertion
Mastoid process
sternocleidomastoid - actions
When both contract neck flexes
When left contracts head rotates right
When right contracts head rotates left
trapezius - origin
Occipital bone
Cervical vertebrae
Thoracic vertebrae
trapezius - insertion
clavicle
Acromion of scapula
Spine of scapula
Trapezius - actions
extends the neck when scapula is fixed
External intercostal muscles - origin
Inferior border of rib above
external intercostal muscles-insertion
superior border or rib below
internal intercostal muscles - origin
superior border of rib below
