Scapula movements & Rotator cuff Flashcards
What muscles are involved in elevating the scapula?
Trapezius descending fiber
levator scapulae
Rhomboids minor and major
What muscles are involved in depression of the scapula?
Depressed Pectorals are Seriously Trapping Graceful Ladies
Pectoralis major
Pectoralis minor
Serratus anterior, inferior part
Trapezius ascending fiber
Latissimus dorsi
Gravity
What muscles of the back are involved in protracting the scapula?
Pectoralis Major
Pectoralis minor
Serratus anterior
What muscles are involved in the upward rotation of the scapula?
ABDUCTION
Descending part of Trapezius
Ascending trapezius
Serratus anterior, inferior part
Upward rotations are SAD
What muscles are involved in Retraction of the scapula?
Trapezius middle part
Rhomboids
Latissimus dorsi
What muscles are involved in downward rotation or Adduction of scapula?
Gravity
Rhomboids
Levator scapulae
Latissimus dorsi
Pectoralis minor
Pectoralis major, inferior sternal head
What muscle is involved in medially rotating the humerus?
Latissimus dorsi
Its attachment point is going to be at FISH which is on the humerus.
It is also twisted at this point so when it contracts causes the humerus to rotate medially or toward to body
What muscle rotates the scapula to tilt the glenoid cavity superiorly?
Trapezius
Most likely the upward and downward fibers are working together to rotate the glenoid cavity upward.
The ascending fibers of the trapezius are connected to the tubercle of the scapula spine (medially)
Contracts and brings one side down and the other side up
What muscles are involved in rotating the glenoid cavity inferiorly?
Levator scapulae
(Attached to the superior angle of scapula and so when contracted it will pull the medial end up and the lateral end ie. glenoid cavity will go downward)
Rhomboid major
Rhomboid minor
Which muscle is involved in extending the humerus?
Latissimus dorsi
When the latissimus dorsi contracts it pulls the humerus backward causing extension
All of the muscles of the rotator cuff except the subscapularis attach where on the humerus?
Where does the subscapularis attach?
Greater tubercle of the humerus
Lesser tubercle of the humerus