Save
...
Shoulder Muscles
The Rotator Cuff
Infraspinatus
Save
Share
Learn
Content
Leaderboard
Learn
Created by
Hiri P
Visit profile
Cards (7)
Infraspinatus:
Thick,
triangular
muscle,
upper
part is
deep
to
trapezius
,
deltoid
and the
acromion process
O (origin)
Medial
2
/3 of the
infraspinous fossa
of
scapular
A)
Infraspinatus
1
R (direction)
Laterally
and
merge
to a narrow
tendon
A)
Infraspinatus
1
I (insertions)
Middle
facet on the
greater tubercle
of
humerus
Bursa
separates tendon from
posterior
part of
glenohumeral
joint
A)
Infraspinatus
1
A (action)
Lateral rotation
of
glenohumeral
joint
A)
Infraspinatus
1
NS (nerve supply)
Suprascapular
nerve (
C4
-
C6
)
A)
Infraspinatus
1
Infraspinatus - Function:
Stabilises
the
head
of
humerus
in the
glenoid fossa
during
glenohumeral
movements with other
rotator cuff
muscles
A)
Infraspinatus
1