Shoulder, axilla, brachial plexus

Question 1

Cephalic vein runs here

Answer 1

Deltopectoral groove

Question 2

Stabilizes the scapula, used when stretching upper limb forward to touch an object that is just out of reach.
Landmark for nerves, arteries in axilla

Answer 2

Pectoralis minor

Question 3

Has a sternocostal head (Bigger) and a clavicular head

Answer 3

Pectoralis major

Question 4

Keeps scapula close to thoracic wall

Anchors scapula and enables other muscles to use it as a fixed bone for movements of humerus

Answer 4

Serratus anterior

Question 5

What are the 4 nerves that meet at Erbs point

Answer 5

Great auricular
Transverse cervical
Supraclavicular
Lesser occipital

Question 6

What are the scapulohumeral muscles?

Answer 6

Deltoid, supraspinatus, infraspinatus, teres major/minor, subscapularis

Question 7

Quadrangular space 4 borders?

Answer 7

Medial: Long head of the triceps
Lateral: Humeral shaft
Superior: Teres minor
Inferior:Teres Major

Question 8

Contents of the quadrangular space?

Answer 8

Axillary nerve (passes here on way to innervate teres minor and deltoid)
Posterior humeral circumflex artery

Question 9

Triangular space 3 borders?

Answer 9

Inferior: Teres major
Superior: Teres minor
Lateral: Long head of triceps

Question 10

Contents of the triangular space?

Answer 10

Scapular circumflex artery

Question 11

Triceps hiatus 3 borders?

Answer 11

Superior: Teres major
Lateral: Lateral head of triceps or the humerus
Medial: Long head of triceps

Question 12

Contents of the triangular hiatus?

Answer 12

Profunda brachii artery

Radial nerve

Question 13

Characteristics of the AC joint

Answer 13

Plane synovial

Question 14

Coracoclavicular
Trapezoid
Conoid ligament deal with what joint?

Answer 14

AC joint

Question 15

Characteristics of Glenohumeral joint?

Answer 15

Ball and socket
Has more freedom and movement than any other joint in the body
Allows for movements around the three axes

Question 16

Characteristics of the SC joint?

Answer 16

Saddle, but act like a ball and socket

Question 17

Costoclavicular

interclavicular ligaments deal with what joint?

Answer 17

SC joint

Question 18

What surrounds the SC joint?

Answer 18

Joint capsule

Question 19

Large spherical humeral head articulates with the relatively small and shallow glenoid cavity of the scapula, which is deepened slightly by this ring like, fibrocartilage

Answer 19

Glenoid labrum

Question 20

Anterior axio-appendicular muscles

• What do they move
• What muscles are included?

Answer 20

Move the pectoral girdle

Pec. major/ minor, subclavius, and serratus anterior

Question 21

Posterior axio-appendicular muscles
Superficial?
Deep?

Answer 21

Superficial-trapezius and lats

Deep- Levator scapulae rhomboids

Question 22

Glenoid cavity only accepts a little more than what of the humeral head?
Humeral head is held in by?

Answer 22

A third

Rotator cuff

Question 23

The armpit is called?

Answer 23

The axilla

Question 24

Apex of axilla?

Answer 24

Made up of 1st rib, clavicle, superior levator scap

Question 25

Base of axilla?

Answer 25

fascia, skin (forms the armpit)

Question 26

Anterior wall of axilla?

Answer 26

Pectoralis major

Question 27

Posterior wall of axilla?

Answer 27

Scapula and subscapularis (anterior) | Inferiorly by lats and teres major

Question 28

Medial wall of axilla?

Answer 28

Thoracic wall, overlying serratus anterior

Question 29

Lateral wall of axilla?

Answer 29

Intertubecular sulcus of humerus

Question 30

Contents of the axilla?

Answer 30

Axillary vein/ artery, nerves cords and branches of brachial plexus, lymphatic vessels, and axillary lymph nodes

Question 31

Pectoralis minor, subclavius, omohyoid, tendon of the long head of the biceps are more muscles that are part of the?

Answer 31

Axilla

Question 32

The subclavian A/V becomes what at the 1st rib?

Answer 32

Axillary A/V

Question 33

The axillary goes where?

Answer 33

To the rotator cuff

Question 34

Lies initially (distally) on the anteromedial side of the axillary artery, with its terminal part antero-inferior to the artery?

Answer 34

Axillary vein

Question 35

Formed by the union of the accompanying brachialveins and the basilic vein at the inferior border of the teres minor.

Answer 35

Axillary vein

Question 36

What are more abundant than the arteries of the axilla? | They are what?

Answer 36

Veins of axilla | Highly variable and frequently anastomose

Question 37

Major network of nerves supplying the upper limb. Beings in the lateral cervical triangle and extends into the axilla?

Answer 37

Brachial plexus

Question 38

The brachial plexus is formed by the union of what?

Answer 38

Anterior rami of the C5-T1 nerves

Question 39

The roots of the brachial plexus usually pass through?

Answer 39

The anterior and middle scalenes. Near subclavian artery

Question 40

Superior trunk of Brachial plexus?

Answer 40

Formed by the union of C5 and C6 roots

Question 41

Middle trunk of Brachial plexus?

Answer 41

Formed by the continuation of the C7 root

Question 42

Inferior trunk of Brachial plexus?

Answer 42

Formed by the union of the C8 and T1 roots

Question 43

5 roots of brachial plexus?

Answer 43

C5,6,7,8 and T1

Question 44

3 trunks of brachial plexus?

Answer 44

Superior- Suprascapular nerve and the subclavian nerve Middle Inferior

Question 45

How many anterior and posterior divisions in the brachial plexus?

Answer 45

3 anterior | 3 posterior

Question 46

3 cords around axillary artery?

Answer 46

Lateral- Lateral pectoral nerve Posterior- Upper subscapular nerve, Thoracodorsal nerve, lower subscapular nerve Medial- Medial pectoral nerve, medial cutaneous nerve of arm, medial cutaneous nerve of forearm

Question 47

Terminal branches of brachial plexus?

Answer 47

``` Musculotaneous nerve Axillary nerve Median nerve Radial nerve Ulnar nerve ```

Question 48

Transverse humeral ligament CoraCoacromial ligament Cora-Acromial Arch

Answer 48

Part of glenohumeral ligament

Question 49

First part of Axillary artery and vein? | Branches?

Answer 49

Between lateral border of 1st rib and medial border of pec. minor Branches- superior thoracic artery

Question 50

Second part of Axillary artery and vein? | Branches?

Answer 50

Posterior to pec. minor Branches- Thoracoacromial Deltoid, acromial, pectoral, clavicular Lateral thoracic artery

Question 51

Third part of axillary artery and vein? | Branches?

Answer 51

Lateral border of pec minor to inferior border of teres major Branches- Subscapular artery Thoracodorsal scapular circumflex Posterior/ Anterior circumflex humeral artery