Muscle Origins, Insertions, and Actions Flashcards
iliopsoas group is made up of these muscles
iliacus, psoas major
hamstrings are made of these muscles
biceps femoris, semitendinosus, semimembranosus
quadriceps are made of these muscles
rectus femoris, vastus lateralis, vastus medialis, vastus intermedius
buccinator
origin, insertion, action
buccinator
alveolar processes of maxilla/mandible, fibers of orbicularis oris, compresses cheeks
mentalis
incisive fossa of of mandible, skin of chin, moves lower lip
orbicularis oris
maxilla/mandible, lips, compresses lips
risorius
fasica surrounding parotid salivary gland, angle of mouth, draws corner of mouth laterally
orbicularis oculi
medial margin of orbit, skin around eyelids, closes eye
frontal belly of occipitofrontalis
epicranial aponeurosis, skin of eyebrow/bridge of nose, raises eyebrows/wrinkles forehead
occipital belly of occipitofrontalis
mastoid portion of temporal bone, epicranial aponeurosis, tenses/retracts scalp
temporoparietalis
fascia around external ear, epicranial aponeurosis, tenses scalp/moes auricle of ear
masseter
zygomatic arch, angle of mandibular ramus, elevates and closes jaws
temporalis
temporal lines of skull, coronoid process of mandible, elevates and closes jaws
digastric anterior belly
inferior surface of mandible, hyoid bone, opens mouth
digastric posterior belly
mastoid region of temporal bone, hyoid bone, opens mouth
geniohyoid
medial mandible surface, hyoid bone, opens mouth and retracts hyoid bone
mylohyoid
mandible, connective tissue that runs to hyoid bone, opens mouth
omohyoid
superior border of the scapula, hyoid bone, depresses hyoid
sternohyoid
clavicle/manubrium, hyoid bone, depresses hyoid bone
sternothyroid
dorsal surface of manubrium, thyroid cartilage of larynx, depresses hyoid bone
stylohyoid
styloid process of temporal bone, hyoid bone, elevates larynx
thyrohyoid
thyroid cartilage of larynx, hyoid bone, elevates larynx
sternocleidomastoid clavicular head
sternal end of clavicle, mastoid region, bends neck toward shoulder
sternocleidomastoid sternal head
manubrium, mastoid region, bends neck toward shoulder
external intercostals
inferior border of each rib, superior border of more inferior rib, elevate ribs
internal intercostals
superior border of each rib, inferior border of the more superior rib, depress ribs
serratus posterior inferior
aponeurosis from spinous processes, inferior broder of ribs 9-12, pulls ribs outward opposing diaphragm
external oblique
external and inferior border of ribs 5-12, external oblique aponeuroses, compresses abdomen
internal oblique
throacolumbar fascia, inferior surfaces of ribs 9-12, compresses abdomen
transversus abdominis
cartilages of ribs 6-12, linea alba/pubis, compresses abdomen
diaphragm
xiphoid process, contral tendinous sheet, expands throacic cavity
rectus abdominis
superior surface of pubis, xiphoid process, depresses ribs
pectoralis minor
fascia covering external intercostal muscles, coracoid process of scapula, depresses/protracts shoulder
rhomboid major
ligamentum nuchae, vertebral border of scapula, adducts and downward rotation of scapula
rhomboid minor
spinous processes of vertebrae, vertebral border of scapula, adducts and downward rotation of scapula
serratus anterior
anterior and superior margins of ribs, vertebral border of scapula, protracts shoulder
subclavius
first rib, clavicle, depresses and protracts shoulder
trapezius
occipital bone, clavicle/scapula, elevates scapula