OINA's of the Shoulder and Arm

Question 1

Deltoid Clavicular Part (anterior)

Answer 1

O: Lateral 1/3 of clavicle
I: Humerus (deltoid tuberoisity)
N: Axillary Nerve (C5, C6)
A: Flexion, Internal Rotation, Adduction

Question 2

Deltoid Acromial part (middle)

Answer 2

O: Acromion
I: Humerus (deltoid tuberosity)
N: Axillary Nerve (C5, C6)
A: Abduction

Question 3

Deltoid Spinal Part (posterior)

Answer 3

O: Scapular Spine
I: Humerus (deltoid tuberosity)
N: Axillary Nerve (C5, C6)
A: Extension, External Rotation, Adduction

Question 4

Supraspinatus

Answer 4

O: Supraspinous fossa
I: Greater Tuberosity of Humerus
N: Suprascapular Nerve (C4-C6)
A: Abduction

Question 5

Infraspinatus

Answer 5

O: Infraspinous fossa
I: Greater Tuberosity of Humerus
N: Suprascapular Nerve (C5-C6)
A: External Rotation

Question 6

Teres Minor

Answer 6

O: Lateral Border of Scapula
I: Greater Tuberosity of Humerus
N: Axillary Nerve (C5, C6)
A: External Rotation, Weak Adduction

Question 7

Subscapularis

Answer 7

O: Subscapular Fossa
I: Lesser Tuberosity of Humerus
N: Subscapular Nerve (C5, C6, C7)
A: Internal Rotation

Question 8

Pectoralis Major (clavicular part)

Answer 8

O: Clavical (medial half)
I: Humerus (crest of greater tuberosity)
N: Medial and Lateral Pectoral Nerve (C5-T1)
A: Adduction and Internal Rotation

Question 9

Pectoralis Major (sternocostal part)

Answer 9

O: Sternum and costal cartilages 1-6
I: Humerus (crest of greater tuberosity)
N: Medial and Lateral Pectoral Nerve (C5-T1)
A: Adduction and Internal Rotation

Question 10

Pectoralis Major (abdominal part)

Answer 10

O: Rectus Sheath (anterior layer)
I: Humerus (crest of greater tuberosity)
N: Medial and Lateral Pectoral Nerve (C5-T1)
A: Adduction and Internal Rotation

Question 11

Coracobrachialis

Answer 11

O: Coracoid Process
I: Humerus (in line with crest of lesser tuberosity)
N: Musculocutaneous Nerve (C5-C7)
Action: Flexion, Adduction, Internal Rotation

Question 12

Subclavius

Answer 12

O: 1st Rib
I: Clavicle (inferior surface)
N: Nerve to Subclavius (C5, C6)
A: Steadies the clavicle in the sternoclavicular joint

Question 13

Pectoralis Minor

Answer 13

O: 3rd to 5th Ribs
I: Coracoid Process
N: Medial Pectoral Nerve (C8, T1)
A: Scapular Stabilization

Question 14

Serratus Anterior

Answer 14

O: 1st to 9th Ribs
I: Scapula (medial border)
N: Long Thoracic Nerve (C5-C7)
A: Scapular Stabilization; Upward Rotation, Protraction, and Depression of Scapula

Question 15

Trapezius (Descending Part)

Answer 15

O: Occipital Bone; Spinous process of C1-C7
I: Clavicle (lateral 1/3)
N: Cranial Nerve XI (motor) and C3, C4 spinal nerves (sensory)
A: All parts retract scapula; Scapular Elevation and Upward Rotation

Question 16

Trapezius (Transverse Part)

Answer 16

O: Aponeurosis at T1-T4 spinous processes
I: Acromion
N: Cranial Nerve XI (motor) and C3, C4 spinal nerves (sensory)
A: retracts scapula (all parts)

Question 17

Trapezius (Ascending Part)

Answer 17

O: Spinous Process of T5-T12
I: Scapular Spine
N: Cranial Nerve XI (motor) and C3, C4 spinal nerves (sensory)
A: All parts retract scapula, descending and ascending upward rotation of scapula; Scapular Depression

Question 18

Levator Scapulae

Answer 18

O: Transverse Process of C1-C4
I: Scapula (Superior Angle)
N: Dorsal Scapular Nerve (C4-C5)
A: Elevation and Downward Rotation of Scapula

Question 19

Rhomboid Minor

Answer 19

O: Spinous Process of C6, C7
I: Medial Border of Scapula above scapular spine
N: Dorsal Scapular Nerve (C4-C5)
A: Scapular Stabilization, Downward Rotation and Retraction of Scapula

Question 20

Rhomboid Major

Answer 20

O: Spinous Process of T1-T4
I: Medial Border of scapula below scapular spine
N: Dorsal Scapular Nerve (C4-C5)
A: Scapular Stabilization, Downward Rotation and Retraction of Scapula

Question 21

Teres Major

Answer 21

O: Scapula (Inferior Angle)
I: Crest of lesser tuberosity of the Humerus (anterior angle)
N: Lower Subscapular Nerve (C5, C6)
A: Internal Rotation, Adduction, Extension

Question 22

Latissimus Dorsi

Answer 22

O: T7-T12 SPs, TL fascia, and ribs 8-12
I: Floor of Intertubercular Groove of Humerus
N: Thoracodorsal Nerve (C6-C8)
A: extend, adduct, IR of humerus, raises body during climbing