Axial and Appendicular Muscles Flashcards
raises eyebrows
epicranius
elevates/ retracts mandible
temporalis
closes eyelid
orbicularis oculi
closes lips
orbicularis oris
elevates mandible
masseter
protrude lower lip (pout)
mentalis (remember the mental foramen?)
compress cheek (whistle, suck)
buccinator
move corners of lips laterally
risorius
tenses skin of neck
platysma
flexes/laterally rotates head
sternocleidomastoid
extends/hyperextends head, antagonist to sternocleidomastoid
splenius
elevates, depresses, rotates, retracts, stabilizes scapula
trapezius
What is the one motion the trapezius does not perform for the scapula?
protraction
prime mover arm flexion, medially rotates arm, abducts arm
pectoralis major
depress, protract scapula
pectoralis minor
prime mover protraction of scapula, rotates scapula
serratus
depress ribcage (exhalation)
internal intercostals
elevates ribcage (inhalation, inspiration)
external intercostals
prime mover for inspiration
diaphragm
flex, rotate lumbar region
rectus abdominus
compresses abdomen
transversus abdominus
compress abdomen, lateral flexion of trunk, flexion of vertebral column, rotate trunk
external obliques
compress abdomen, lateral flexion of trunk, flexion of vertebral column, rotate trunk
internal obliques