Shoulder Girdle Muscles OINA

Question 1

Upper Trapezius

Answer 1

O: Occipital bone, nuchal ligament on upper cervical spinous process.
I: outer 3rd of clavicle, acromion process
A: Scapular elevation & Upward rotation
N: Spinal accessory: C3, C4

Question 2

Middle Trapezius

Answer 2

O: Spinous Process of C7- T3
I: Scapular Spine
A: Scapular Retraction
N: Spinal accessory: C3, C4

Question 3

Lower Trapezius

Answer 3

O: Spinous process of middle & lower thoracic vertebra
I: Base of scapular spine
A: upward rotation, scapular depression
N: Spinal accessory: C3, C4

Question 4

Levator Scapula

Answer 4

O: Transverse process of C1-C4
I: Vertebral border of scapula b/t superior angle and spine
A: Scapular elevation & downward rotation
N: Dorsal Scapular: C3, C4, C5

Question 5

Rhomboid Major/ Minor

Answer 5

O: Spinous processes of C7-T5
I: Vertebral border of scapula b/t spine & inferior angle
A: Retraction, Elevation, & Downward rotation
N: Dorsal Scapular: C5

Question 6

Serratus Anterior

Answer 6

O: Lateral surface of upper 8 ribs
I: Vertebral border of scapula, anterior surface
A: Scapular protraction & upward rotation
N: Long thoracic C5, C6, C7

Question 7

Pectoralis Minor

Answer 7

O: Anterior surface of 3rd, 4th, 5th Ribs
I: Coracoid Process of Scapula
A: Depression, Protraction, Downward rotation, Scapular tilt
N: Medial Pecoral Nerve C8 & T1