Muscles of the Scapula Flashcards
Origin: Upper 8 or 9 Ribs
Insertion: Anterior medial border of the scapula
Serratus Anterior
What direction (plane) do most of the fibers of the serratus anterior run?
Transverse
Which joint actions do the serratus anterior contribute to?
protraction and retraction
When the serratus anterior shortens which directions will it pull the scapula?
forward/protraction
What might the serratus anterior do in the frontal plane?
Upward Rotation (Frontal Plane) by pulling the inferior angle forward and up
Joint the serratus anterior crosses:
scapula (shoulder girdle)
Origin: ribs 3, 4 and 5
insertion: coracoid process
pectoralis minor
What direction (plane) do the fibers of the pectoralis minor pull?
down
Joint the pectoralis minor crosses
scapula (shoulder girdle)
actions of the pectoralis minor:
depression, downward rotation, protraction, and anterior tipping
Origin: external occipital protuberance of the skull, spinous process c7 and t1-t12
Insertion: acromion process, spine of the scapula and lateral 1/3 of clavicle
trapezius
what joint actions occur in the upper trapezius?
upward rotation and elevation
which direction do the fibers of the upper trapezius pull?
up
what joint action occurs in the middle trapezius?
retraction
which direction do the fibers of the lower trapezius pull?
down
which joint action occurs in the lower trapezius?
depression (not downward rotation) and upward rotation
Origin: Transverse process of C1-C4
Insertion: Superior medial border of scapula
levator scapulae
What action does the name of the levator scapulae imply?
elevation
joint that the elevator scapulae crosses:
scapulae
actions of the elevator scapulae:
elevation and downward rotation
Origin: Spinous processes of C7-T5
Insertion: Medial border of the scapula
Rhomboids
Which joint action are the rhomboids contracting best at?
retraction
If the rhomboids are lengthened in upward rotation, what joint action could they contribute to while shortening?
downward rotation
joint the rhomboids cross:
scapula
actions of the rhomboid:
retraction, downward rotation and elevation
plane, muscles responsible and sample exercise:
scapula
elevation
frontal
upper trapezius, levator scapulae, rhomboids
shrugs
plane, muscles responsible and sample exercise:
scapula
depression
frontal
lower trapezius, pectoralis minor
end of a dip, bottom of lat pull down, functional push up
plane, muscles responsible and sample exercise:
scapula
downward rotation
frontal
pectoralis minor, levator scapulae, rhomboids
lat pull down, pull up
plane, muscles responsible and sample exercise:
scapula
upward rotation
frontal
upper traps, lower traps, serratus anterior
overhead press, lateral raise
plane, muscles responsible and sample exercise:
scapula
protraction
transverse
pectoralis minor, serratus anterior
bench press, push up and all pushing motion
plane, muscles responsible and sample exercise:
scapula
retraction
transverse
middle traps, rhomboids
rowing and all pulling motions
plane, muscles responsible and sample exercise:
scapula
anterior tipping
sagittal
pectoralis minor, levator scapulae, upper traps
end of shoulder extension
plane, muscles responsible and sample exercise:
scapula
posterior tipping
sagittal
lower traps, serratus anterior
end of shoulder flexion
