Test 2- Part 3: The Shoulder

Question 1

Resists excessive depression or downward glide of the clavicle

Answer 1

Interclavicular joint

Question 2

Resists clavicular elevation and superior glide of the clavicle

Answer 2

Costoclavicular

Question 3

Resists anterior movement of the head of the clavicle

Answer 3

Anterior Sternoclavicular

Question 4

Resists posterior movement of the head of the clavicle

Answer 4

Posterior Sternoclavicular

Question 5

Most important ligament in stabilizing AC joint for normal daily activities

Answer 5

Acromioclavicular

Question 6

The most important ligament for support of the joint against significant
injuries and superior displacement

Answer 6

Coracoclavicular

Question 7

Roll, glide, & pivot

Answer 7

GH Joint

Question 8

Stabilize the shoulder in adduction

• Helps to prevent posterior and inferior instability

Answer 8

Superior GH Ligament

Question 9

Limits external rotation at 45 deg of abduction

• Helps to prevent posterior and inferior instability

Answer 9

Middle GH ligament

Question 10

Primary restraint to anterior and anteroinferior instability

• Limits external rotation at 45 to 90 deg of abduction

Answer 10

Inferior GH ligament

Question 11

• Posterior capsule and the teres minor restrain internal rotation

Answer 11

Posterior GH ligament

Question 12

Origin of the trapezius upper fibers

Answer 12

External occipital protuberance (muscle in back of neck) ,medial portion of superior nuchal line, (mustache coming off of skull) ligamentum nuchae and spinous process C1-C6 (dinosaur spikes)

Question 13

Insertion of the trapezius upper fibers

Answer 13

Lateral 1/3 of the clavicle (end of clavicle)

Question 14

Action of trapezius upper fibers

Answer 14

• Laterally flex the head and neck to same side
• Rotate the head and neck to opposite side
• Elevate the scapula
• Upwardly rotate the scapula

Question 15

Origin of trapezius middle fibers

Answer 15

Spinous processes of C7-T3 (

Question 16

Insertion

Answer 16

Acromion process and

superior scapular spine

Question 17

Action of trapezius middle fibers

Answer 17

Adduct the scapula (squeezing shoulder blades)

Stabilize the scapula (main role)

Question 18

Origin of trapezius lower fibers

Answer 18

Spinous porcesses of T4-12

Question 19

Insertion of trapezius lower fibers

Answer 19

Inferior, medial scapular spine (lower edge/medial edge of scapular spine)

Question 20

Actions of trapezius lower fibers

Answer 20

Depress the scapula (pushing yourself off a chair)
Upwardly rotate the
scapula

Question 21

Origin of levator scapulae

Answer 21

Transverse process of 1st -4th cervical vertebrae

Question 22

Insertion of levator scapulae

Answer 22

Medial border of scapula, between superior angle and superior portion of spine of scapula

Question 23

Action of levator scapulae

Answer 23

• Elevate the scapula
• Downwardly rotate the scapula
• Laterally flex the head and neck (to the ipilateral side) turning head to side
• Rotate the head and neck to same side (ipsiilateral)
• Extend the head and neck (used bilaterally)

Question 24

Origin of rhomboid major

Answer 24

Spinous processes of t2-t5

Question 25

Insertion of rhomboid major

Answer 25

Medial border of the scapula between the spine of the scapula and the inferior angle

Question 26

Action of rhomboid major

Answer 26

Adduct the scapula Elevate the scapula Downwardly rotate the scapula STABILIZE

Question 27

Origin of rhomboid minor

Answer 27

Spinous processes c7-t1

Question 28

Insertion of rhomboid minor

Answer 28

• Upper portion of medial border of the scapula, across | from spine of the scapula

Question 29

Action of rhomboid minor

Answer 29

Adduct the scapula • Elevate the scapula • Downwardly rotate thescapula

Question 30

Origin of seratus anterior

Answer 30

• External surfaces of upper eight or 9 ribs

Question 31

Insertion of serratus anterior

Answer 31

Anterior surface of medial border of the scapula

Question 32

Action of serratus anterior

Answer 32

Abduct the scapula (push-up plus, punches toward wall w/ weight) • Upwardly rotate the scapula • Depress the scapula • Hold the medial border of the scapula against the rib cage (stability) • May act to elevate the thorax during forced inhalation (scapula fixed)

Question 33

Origin of pectoralis minor

Answer 33

3rd, 4th, & 5th ribs

Question 34

Insertion of pectoraiis major

Answer 34

Medial surface of coracoid | process of the scapula

Question 35

Action

Answer 35

``` • Depress the scapula • Abduct the scapula • Downwardly rotate the scapula • Assist to elevate the thorax during forced inhalation (scapula fixed) ```

Question 36

Origin of deltoid

Answer 36

``` Anterior fibers: • Lateral ⅓ of clavicle • Middle fibers: • Lateral aspect of acromion • Posterior fibers: • Inferior edge of spine of scapula ```

Question 37

Insertion of deltoid

Answer 37

Deltoid tuberosity

Question 38

Action of deltoid

Answer 38

``` Anterior fibers: • Flex the shoulder • Medially rotate the shoulder • Horizontally adduct the shoulder • Middle fibers: • Abduct the shoulder • Posterior fibers: • Extend the shoulder • Laterally rotate the shoulder • Horizontally abduct the shoulder ```

Question 39

Origin of pectoralis major

Answer 39

Upper Fibers • Medial ½ of clavicle • Lower Fibers • Sternum and cartilage of 1st – 6th ribs

Question 40

Insertion of pectoralis major

Answer 40

Crest of greater tubercle of | humerus

Question 41

Action of pectoralis major

Answer 41

``` All Fibers • Adduct the shoulder • Medially rotate the shoulder • Assist to elevate the thorax during forced inhalation (arm fixed) • Upper fibers: • Flex the shoulder • Horizontally adduct the shoulder • Lower fibers: • Extend the shoulder ```

Question 42

Origin of latissimus dorsi

Answer 42

``` • Inferior angle of scapula • Spinous process of last six thoracic vertebrae • Last three or four ribs • Thoracolumbar aponeurosis and posterior iliac crest ```

Question 43

Insertion of latissimus dorsi

Answer 43

Intertubercular groove of the humerus

Question 44

Action of latissimus dorsi

Answer 44

* Extend the shoulder * Adduct the shoulder * Medially rotate the shoulder

Question 45

Origin of latissimus dorsi:

Answer 45

``` Inferior angle of scapula • Spinous process of last six thoracic vertebrae • Last three or four ribs • Thoracolumbar aponeurosis and posterior iliac crest ```