Chapter 4

Question 1

Bones that involved in the shoulder girdle movements?

Answer 1

Scapula an clavicle are working as a unit

Question 2

Joints of the shoulder girdle?

Answer 2

Sternoclavicular, acromioclavicular joint, scapulothoracic, and glenohumeral joint

Question 3

What joint is not a true joint?

Answer 3

Scapulothoracic joint

Question 4

Actions of the Scapulothoracic joint?

Answer 4

Elevation/Depression - 55 degree
Ab/adduction (protraction/retraction) - 25 degree
Up/downward rotation - 60 degree

Question 5

What is the only bony attachment attaching the upper limb to
the axial skeleton?

Answer 5

Sternoclavicular joint

Question 6

Trapezius muscle

Answer 6

It goes from C7 to T12

Question 7

Upper fibers of the Trapezius muscle produce …

Answer 7

Elevation, extention and rotation of the head

Question 8

Middle fibers of the Trapezius muscle produce …

Answer 8

Mostly Adduction but also elevation and upward rotation

Question 9

Lower fibers of the Trapezius muscle produce …

Answer 9

Depression, adduction and upward rotation

Question 10

By what nerve is the Trapezius muscle innervated?

Answer 10

Spinal accessory nerve 11

Question 11

Levator scapula muscle

Answer 11

It’s called like that because it elevates the scapula

Question 12

Rhomboid minor muscle attaches …

Answer 12

From C7 to T1

Question 13

Rhomboid major muscle attaches …

Answer 13

From T2 to T5

Question 14

Rhomboid major and minor muscles will collectively

Answer 14

Adduct (retract) the scapula

Question 15

By what nerve are the Levator scapula, Rhomboid major and minor muscles innervated

Answer 15

Dorsal scapula nerve C5

Question 16

Serratus anterior muscle

Answer 16

It serrates the 9 ribs at the side of the chest that’s why it’s called like that

Question 17

By what nerve is the Serratus anterior muscle innervated

Answer 17

Long thoracic nerve C5-C7

Question 18

What nerve is easy to injure?

Answer 18

Long thoracic nerve

Question 19

Pectoralis minor muscle

Answer 19

Arises from rib 3 to 5. It helps to stabilize the Scapulothoracic joint

Question 20

Subclavicus muscle

Answer 20

It comes from rib one to the bottom of clavicle support

Question 21

The Scapulothoracic joint doesn’t have any ligamentous support?

Answer 21

True

Question 22

What joint is easy to injure?

Answer 22

Acromioclavicular joint

Question 23

The glenohumeral joint is a …

Answer 23

Synovial joint which means “Ball and Socket”

Question 24

The glenohumeral joint is a really flexible joint, but the same time it doesn’t have enough stability

Answer 24

True

Question 25

Glenoid labrum

Answer 25

It's like a bowl for a golf ball so it won't fall

Question 26

Glenoid labrum

Answer 26

It increases depth of glenoid cavity by 50%

Question 27

Glenoid labrum

Answer 27

It also has a suction effect как например штука для чистки унитаза

Question 28

Glenoid labrum

Answer 28

It also has a attachment for biceps tendon (long head)

Question 29

Joint capsules

Answer 29

It has a intracapsular negative pressure that helps to articulate the glenohumeral joint inside.

Question 30

Axillary fold

Answer 30

Increases the rick of dislocation

Question 31

Caracohumeral ligament

Answer 31

It helps to stabilized and keep the head of the humerus in the socket if you put it down

Question 32

Coracoacromial ligament

Answer 32

It helps to stabilized and keep the head of the humerus in the socket if you put it up

Question 33

Coracoclavicular ligament

Answer 33

It helps anchor the clavicle to ensure that it articulates with the acromioclavicular ligament

Question 34

Rotator cuff muscles

Answer 34

S.I.T.S muscles

Question 35

Supraspinatus muscle

Answer 35

It helps with abduction of the humerus. But only in the first 15 degrees.

Question 36

Infraspinatus and Teres minor muscles

Answer 36

When they contract, they produce external rotation of the glenohumeral joint

Question 37

Subscapularis muscle

Answer 37

This muscle produces internal rotation of the glenohumeral joint

Question 38

Rotator cuff muscles stabilize the glenohumeral joint

Answer 38

True

Question 39

Innervation of the Supraspinatus and Infraspinatus muscles

Answer 39

Suprascapular nerve C5 and C6

Question 40

Innervation of the Subscapularis muscle

Answer 40

Lower and upper subscapular nerves

Question 41

Deltoid muscle

Answer 41

Anterior - flexion of the glenohumeral joint Middle - abduction of the glenohumeral joint (after 15 degree of Supraspinatus muscle) Posterior - extension of the glenohumeral joint

Question 42

Innervation of the Deltoid and Teres minor muscles

Answer 42

Axillary nerve C5 and C6

Question 43

Intertubercular groove muscles

Answer 43

Pectoralis major muscle Teres major muscle Latissimus dorsi muscle

Question 44

Pectoralis major muscle

Answer 44

Грудные мышцы. When this muscle contracts it helps with a horizontal addiction (bench press or push ups)

Question 45

Latissimus dorsi muscle

Answer 45

It goes from T7 all the way to L5. Actions are extension and addiction of the glenohumeral joint

Question 46

Innervation of the Latissimus dorsi muscle

Answer 46

Thoracodorsal nerve C6-C8

Question 47

The intrinsic muscles of the glenohumeral joint

Answer 47

Deltoid, Rotator cuff muscles (SITS muscles), and the terms major muscles

Question 48

The extrinsic muscles of the glenohumeral joint

Answer 48

The Latissimus dorsi and Pectoralis major muscle

Question 49

What types of the shoulder joints?

Answer 49

-Ball and socket -Synovial -Diarthrotic

Question 50

Motions of the scapula?

Answer 50

Elovation/depression Protraction/retraction Upward/downward rotation

Question 51

What joints and bones make up the shoulder complex?

Answer 51

- Sternoclavicular - Acromioclavicular - Scapulothoracic - Glenohumeral - Clavical - Scapula - Humerus