Muscles of head, neck, and trunk Flashcards
function of external intercostals
elevates the ribs (inhalation)
function of the diaphragm
increases thoracic cavity (inhalation)
Origin and insertion of masseter
origin: zygomatic arch
insertion: mandibular angle
muscle
sternocleidomastoid
muscle
occipitofrontalis
muscle
external intercostals
bone feature
temporal fossa
function of internal intercostals
depresses the ribs (exhalation)
Muscle, origin and insertion.
masseter
origin: zygomatic arch
insertion: mandibular angle
muscle
aponeurosis of the external oblique
muscle
internal intercostals
muscle, origin, and insertion.
muscle: serratus anterior
origin: ribs 1-8
insertion: entire anterior surface of vertebral border of scapula
function of trapezius
raise, rotate, and retract the scapula
serratus anterior origin and insertion
origin: ribs 1-8
insertion: entire anterior surface of vertebral border of scapula
muscle
thoracolumbar fascia
function of orbicularis oris
closes and protrudes lips (duck face)
muscle
masseter
muscle
inguinal ligament
function of temporalis
elevates and retracts mandible
function of rhomboid major
elevates and retracts scapula
muscle
orbicularis oris
muscle, origin and insertion.
muscle: temporalis
origin: temporal fossa
insertion: coronoid process of the mandible