Shoulder powerpoint

Question 1

What provides protection for brachial plexus and subclavian blood vessels

Answer 1

The posterior surface of the sternal end of the clavicle

Question 2

What type of joint is the sternoclavicular joint?

Answer 2

Saddle type synovial

Question 3

What type of joint is the acromioclavicular joint?

Answer 3

Planar/ gliding type synovial

Question 4

What does the suprascapular nerve pass through? What holds it in place?

Answer 4

Supra scapular notch; Superior transverse lig.

Question 5

What makes up the shoulder girdle?

Answer 5

Clavicle and scapula

Question 6

What are the functions of the scapula?

Answer 6

1. Provides attachments for large, strong muscles
2. Protection of body parts
3. Scapula acts as pivot point for the level system of the shoulder

Question 7

Only bony link between shoulder girdle and trunk (keeps shoulder joint away from anterior chest)

Answer 7

Sternoclavicular joint

Question 8

What type of articular cartilage is in the SC joint?

Answer 8

Fibrocartilage (most joints have hyaline cartilage)

Question 9

What is located between the articular surfaces of the SC joint and divide the joint space into 2 cavities?

Answer 9

Fibrocartilaginous disc

Question 10

What are the ligaments of the SC joint?

Answer 10

1. Anterior and Posterior SC lig.’s
2. Costoclavicular lig.
3. Interclavicular lig.

Question 11

Ligaments that limit upward and lateral displacement of medial end of clavicle; Ligament continuous with articular disc; Ligaments reinforce the fibrous joint capsule

Answer 11

Anterior and posterior SC lig.’s

Question 12

Ligament that limits upward and lateral displacement of the medial end of the clavicle; Attaches to costal tuberosity on the clavicle; Reinforces fibrous joint capsule

Answer 12

Costoclavicular lig.

Question 13

Ligament that prevents lateral displacement of medial end of the clavicle; Travels between left and right clavicles across the superior surface of the manubrium

Answer 13

Interclavicular ligament

Question 14

What is different about the articular disc at the AC joint (in comparison to the SC joint)?

Answer 14

The disc is usually incomplete and wedge shaped

Question 15

What is the strongest ligament that binds the clavicle to the scapula?

Answer 15

Coracoclavicular ligaments

Question 16

What are the two parts of the coracoclavicular ligament? which is medial and which is lateral?

Answer 16

Trapezoid = lateral
Conoid = medial

Question 17

Where is the anatomical neck of the humerus?

Answer 17

Where the joint capsule attaches to; the thick part around the head of the humerus

Question 18

Where is the most likely site for fractures of the humerus?

Answer 18

Surgical neck

Question 19

What is the shape of the shaft of the humerus?

Answer 19

Triangular

Question 20

What does the radial nerve travel through on the humerus?

Answer 20

Radial groove

Question 21

What part of the humerus articulates with the ulna? radius?

Answer 21

Trochlea; capitulum

Question 22

What fossas allow the arm to flex and extend at the elbow? name the fossa and the corresponding boney articulation.

Answer 22

Radial fossa - head of the radius (flexion)
Coronoid fossa - coronoid process of the ulna (flexion
Olecranon fossa - olecranon process of the ulna (extension)

Question 23

What type of joint is at the humeral-ulnar joint?

Answer 23

hinge

Question 24

What type is the humeral-radial joint?

Answer 24

Gliding/planar

Question 25

Ligament that forms hammock-like sling under head of humerus

Answer 25

Inferior glenohumeral lig

Question 26

The fibrocartilage that surrounds the rim of the glenoid fossa

Answer 26

glenoid labrum

Question 27

What ligament helps form tunnel for long head of biceps brachii?

Answer 27

Coracohumeral ligament

Question 28

What is the stability for bony structures of the shoulder joint? ligamentous structure? Muscular arrangement?

Answer 28

Weak (shallow glenoid fossa); Weak (slap joint capsule); Strong

Question 29

What movements of the shoulder joint/girdle hep stabilized the joint?

Answer 29

Elevation and depression for raising loads; upward rotation for lifting heavy loads

Question 30

True or false: | The tendon of the long head of biceps brachii is intracapsular and extrasynovial

Answer 30

True

Question 31

Pyramidal structure at the junction of the arm and thorax; contains an apex, base, and four walls

Answer 31

Axilla

Question 32

What 3 bones meet to form the apex of the axilla? What enters through the opening (apex) of the axilla?

Answer 32

1. Clavicle - anterior wall 2. Scapula - posterior wall 3. 1st rib - medial wall All blood vessels and nerves to the upper limb

Question 33

What makes up the base of the axilla?

Answer 33

Fascia and skin of the concave axilla

Question 34

What makes up the anterior wall of the axilla?

Answer 34

1. Clavicle | 2. Pectoral muscles

Question 35

What makes up the posterior wall of the axilla?

Answer 35

1. Scapula 2. Subscapularis muscle 3. Teres major and latissimus dorsi muscles - inferiorly

Question 36

What makes up the medial wall of the axilla?

Answer 36

1. Ribs 2. Intercostal muscles 3. Serratus anterior muscle

Question 37

What makes up the lateral wall of the axilla?

Answer 37

(Narrow wall) | Intertubercular groove which holds the tendon of the long head of the biceps muscle

Question 38

What is contained in the axilla?

Answer 38

Cords and branches of brachial plexus

Question 39

What ligament turns the suprascapular notch into the suprascapular foramen?

Answer 39

superior transverse lig of the scapula

Question 40

What travels above and below the transverse ligament in the suprascapular notch?

Answer 40

``` Above= suprascapular artery and vein Below = suprascapular nerve ```

Question 41

What makes up the borders of the quadrangular space?

Answer 41

1. Superior border – teres minor muscle 2. Inferior border – teres major muscle 3. Medial border – long head of the triceps brachii muscle 4. Lateral border – Shaft of humerus and joint capsule

Question 42

What is contained in the quadrangular space?

Answer 42

1. Axillary nerve 2. muscles 3. Posterior humeral circumflex artery

Question 43

What makes up the borders of the deltopectoral triangle?

Answer 43

1. Clavicle – superior 2. Pectoralis major muscle – medial 3. Deltoid muscle – lateral

Question 44

What is contained in the deltopectoral triangle?

Answer 44

1. Cephalic vein travels in the triangle and then dives deep to join the axillary vein 2. Coracoid process of scapula

Question 45

What are the intrinsic ligaments of the AC joint? extrinsic?

Answer 45

Superior and inferior acromioclavicular ligs; coracoclavicular ligs

Question 46

Joint encases in musculature; Highly mobile joint; Provides mobility between the scapula and thorax and is vital to the motions of the arm

Answer 46

Scapulothoracic joint

Question 47

What is the functional significance of shoulder girdle motions?

Answer 47

1. Strong muscles provide power 2. Fragile bones provide mobility 3. Functions of different motions

Question 48

What shoulder girdle motion is important for crutch walking?

Answer 48

depression

Question 49

______ rotation of scapula occurs in flexion and abduction of the arm. ______ rotation of the scapula occurs in extension, hyperextension and adduction of the arm

Answer 49

Upward; Downward

Question 50

_____ of the shoulder girdle muscles is important for the smooth coordinated motion of the scapula

Answer 50

Antagonistic lengthening