Shoulder

Question 1

Trapezius (Ascending)

Answer 1

O- Spinous process T5-T12

I- Scapula Spine

Inn.- Accessory n. (CN XI) C3-C4 cervical plexus

A- Depress scapula

Question 2

Trapezius (Transverse)

Answer 2

O- Nuchal ligament at T1-T4 spinous process
I- Acromion
Inn.- Accessory n. (CN XI) C3-C4 cervical plexus
A- Scapular Retraction

Question 3

Trapezius (Descending)

Answer 3

O- Superior nuchal line; spinous process C1-C7
I- Lateral 1/3 of the clavicle
Inn.- Accessory nerve (CN XI) C3-C4 cervical plexus
A- Elevation and upward rotation

Question 4

Rhomboid Major

Answer 4

O- Spinous process of T2-T5 vertebrae
I- Medial border of scapula below scapular spine
Inn.- Dorsal scapular n. (C4-C5)
A- Scapular Retraction

Question 5

Rhomboid Minor

Answer 5

O- Spinous process of C7-T1
I- Medial border of the scapula above scapular spine
Inn.- Dorsal Scapular n. C4-C5
A- Scapular Retraction

Question 6

Latissimus Dorsi

Answer 6

O- Spinous process T7-T12, thorocolumbar fascia, inferior angle, 9th-12th ribs, iliac crest (posterior 1/3)
I- Floor of intertubecular groove
Inn.- Thorocodorsal n. C6-C8
A- IR, ADD, EXT, respiration

Question 7

Levator Scapulae

Answer 7

O- Transverse process C1-C4
I- Superior angle of the scapula
Inn.- Dorsal scapular. C4-C5
A- Elevation, Downward rotation, and lateral flexion of neck

Question 8

Anterior Scalene

Answer 8

O- Anterior tubercles of transverse process of C3-C6
I- Scalene tubercle of 1st rib
Inn.- Cervical and brachial plexus C3-C8
A. Elevate ribs during forced respiration (with ribs mobile), Unil: bend CS to same side. Bil: flex neck

Question 9

Middle Scalene

Answer 9

O-Transverse process of C1-C2 and post. tubercles of transverse process of C3-C7.
I- 1st rib posterior to groove for subclavian a.
Inn.- Cervical and brachial plexus C3-C8
A- (with ribs mobile) elevate ribs during forced respiration. (fixed ribs) Unil: bend CS to same side. Bil: flex the neck

Question 10

Posterior Scalene

Answer 10

O- Posterior tubercles of the transverse process C5-C7
I- outer surface of 2nd rib
Inn.- cervical and brachial plexus C3-C8
A- (ribs mobile) elevate ribs during forced respiration. (fixed ribs) Unil: bend CS to same side. Bil: flex the neck.

Question 11

Sternocleidomatoid

Answer 11

O- Manubrium, Medial 1/3 of the clavicle
I- Mastoid Process, superior nuchal line
Inn. Spinal Accessory n. CN XI
A- Bil: Extend head, Unil: Lateral flexion and contralateral rotation.

Question 12

Supraspinatus

Answer 12

O- Supraspinous fossa of scapula
I- Superior facet of the greater tubercle on the humerus
Inn.- Suprascapular n. C4-C6
A- Initiate Abduction for first 15 degrees

Question 13

Infraspinatus

Answer 13

O- Infraspinous fossa of scapula
I- Middle facet of the greater tubercle on the humerus
Inn.- Suprascapular n. C4-C6
A- ER of the humerus

Question 14

Teres Minor

Answer 14

O- Lateral border of the scapula
I- Inferior facet on the humerus
Inn.- Axillary n. C5,C6
A- ER of the humerus

Question 15

Subscapularis

Answer 15

O- Subscapular fossa on the scapula
I- Lesser tubercle
Inn.- Subscapular n. C5,C6
A- IR of the humerus

Question 16

Trapezius (Transverse)

Answer 16

Origin- Nuchal ligament at T1-T4 spinous process

Insertion- Acromion

Innervation- Accessory n. (CN XI) C3-C4 cervical plexus

Action- Retracts scapula

Question 17

Trapezius (Descending)

Answer 17

Origin- superior nuchal line; spinous process C1-C7

Insertion- lateral 1/3 of the clavicle

Innervation- Accessory nerve (CN XI) C3-C4 cervical
plexus

Action-Elevates scapula

Question 18

Rhomboid Major

Answer 18

Origin- Spinous process of T2-T5 vertebrae

Insertion- Medial border of scapula below scapular spine

Innervation- Dorsal scapular n. (C4-C5)

Action- draws scapula medially upward. Stabilizes scapula

Question 19

Rhomboid Minor

Answer 19

Origin- Spinous process of C7-T1

Insertion- medial border of the scapula above scapular spine

Innervation- Dorsal Scapular n. C4-C5

Action- draws scapular medially upward. Stabilizes the scapula

Question 20

Levator Scapulae

Answer 20

Origin- Transverse process C1-C4

Insertion- superior angle of the scapula

Innervation- Dorsal scapular. C4-C5

Action- Draws scapula medially upward while moving inferior angle medially; inclines neck to same side

Question 21

Latissimus Dorsi

Answer 21

Origin-Spinous process T7-T12, thorocolumbar fascia,
inferior angle, 9th-12th ribs, iliac crest (posterior 1/3)

Insertion- Floor of intertubecular lip. Crest of lesser
tuberosity of humerous

Innervation- Thorocodorsal n. C6-C8

Action- IR, ADD, EXT, respiration

Question 22

Pectorals Major (Abdominal)

Answer 22

O- Rectus Sheath
I- Crest of the greater tubercle
Inn.- Medial and Lateral pectoral n. C5-T1
A- Add, IR

Question 23

Teres Major

Answer 23

O- Inferior Angle of Scapula
I- Crest of the lesser tubercle of the humerus
Inn.- Lower Subscapular n. C5-C7
A- Extension, ADD, IR of the humerus

Question 24

Deltoid (Clavicular)

Answer 24

O- Lateral 1/3 of the clavicle
I- Deltoid Tuberosity
Inn.- Axillary n. C5,C6
A- Flex, IR, Add, Assists Abd between 60/90 degrees

Question 25

Deltoid (Acromial)

Answer 25

O- Acromion I- Deltoid tuberosity Inn.- Axillary n. C5,C6 A- Abduction

Question 26

Deltoid (Scapular Spine)

Answer 26

O- Spine of the Scapular I- Deltoid Tuberosity Inn.- Axillary n. C5,C6 A- Ext, ER, Add, Assists Abd between 60/90 degrees

Question 27

Pectorals Major (Clavicular)

Answer 27

O- Medial half of clavicle I- Crest of the greater tubercle Inn.- Medial and Lateral pectoral n. C5-T1 A- Flex, Add, IR

Question 28

Pectoralis Major (Sternalcostal)

Answer 28

O- Sternum and costal cartilage 1-6 I- Crest of the greater tubercle Inn. - Medial and Lateral pectoral n. C5-T1 A- flex, Add, IR

Question 29

Pectorals Major (Abdominal)

Answer 29

O- Rectus Sheath I- Crest of the greater tubercle Inn.- Medial and Lateral pectoral n. C5-T1 A- Add, IR

Question 30

Serratus Anterior

Answer 30

O- Ribs 1-9 I- Medial Border of the Scapula Inn.- Long Thoracic n. C5-C7 A- Protraction and Upward rotation Scapula

Question 31

Subclavius

Answer 31

O- 1st rib I- Inferior surface of the clavicle Inn.- N. to subclavius C5,C6 A- Stabilizes clavicle in SC joint

Question 32

Omohyoid

Answer 32

O- Superior border of Scapula I- Hyoid Bone Inn. Ansa Cervicis C1-C3 A- Depresses hyoid, draws larynx and hyoid down

Question 33

Pectoralis Minor

Answer 33

O- Ribs 3-5 I- Coracoid process Inn.- Medial pectoral n. C8,T1 A- Scapular depression, Inferior angle moves posteriomedially, downward rotation.

Question 34

Supraspinatus

Answer 34

O: supraspinous fossa I: superior facet of greater tubercle Inn: Suprascapular n. (C4-C6) A: abduction of humerus

Question 35

Infraspinatus

Answer 35

O: infraspinous fossa I: middle facet of greater tubercle Inn: Suprascapular A: External rotation humerus

Question 36

Teres Minor

Answer 36

O: lateral border of scapula I: inferior facet of greater tubercle Inn: Axillary n. (C5, C6) A: external rotation, weak adduction

Question 37

Subscapularis

Answer 37

O: subscapular fossa I: lesser tubercle Inn: Subscapular n. (C5, C6) A: internal rotation

Question 38

Teres Major

Answer 38

O: Inferior angle of scapula I: Anterior angle of crest of lesser tubercle of humerus Inn: Lower Subscapular n. (C5-C7) A: internal rotation, adduction, extension

Question 39

Pectoralis Major

Answer 39

O: medial 1/2 clavicle, sternum and costal cartilage ribs 1-6 I: Crest of greater tubercle Inn: Medial and Lateral pectoral nn. (C5-T1) A: adduction, internal rotation Clavicular/Sternocostal flexion; assist in respiration when shoulder is fixed

Question 40

Pectoralis Minor

Answer 40

O: 3-5th ribs I: coracoid process Inn: Medial Pectoral n. A: depresses scapula, anterior tilt and depression of scapula, assist in respiration

Question 41

Subclavius

Answer 41

O: 1st rib I: Inferior Surface of Clavicle Inn: N. to subclavian (C5, C6) A: steadies clavicle in the sternoclavicular joint

Question 42

Serratus Anterior

Answer 42

O: 1st to 9th ribs I: medial border or scapula Inn: Long Thoracic n. (C5-C7) A: superior: lowers raised arm entire: protraction; elevates inferior: rotates scapula laterally

Question 43

Sternocleidomastoid

Answer 43

Origin: Manubrium, Medial 1/3 of the clavicle. Insertion: Mastoid process and superior nuchal line Innervation: Accessory nerve (CN XI) Action: Bil: Extend the head. Unil: Tilt head to same side and rot. to opp. side.

Question 44

Anterior Scalene

Answer 44

Origin: Anterior tubercles of transverse process of C3-C6 Insertion: Scalene tubercle of 1st rib Innervation: Cervical and brachial plexus C3-C8 Action: elevate ribs during forced respiration (with ribs mobile), Unil: bend CS to same side. Bil: flex neck