Pectoral Region and Axilla Picture Cards

Question 1

Name these veins. Which one is often used as a site for venous puncture for blood sampling or medication administration?

Answer 1

1. Cephalic vein
2. Basilic vein
3. Median cubital vein - often used for venous puncture
4. Cephalic vein
5. Basilic vein

Question 2

Answer 2

1. Subclavian artery
2. Superior thoracic artery
3. Thoracoacromial artery
4. Lateral thoracic artery
5. Thoracodorsal of the Subscapular artery
6. Circumflex scapular branch of the subscapular
7. Anterior circumflex humeral artery
8. Posterior circumflex humeral artery

Question 3

Answer 3

1. Parasternal nodes
2. Central axillary nodes
3. Brachial (lateral) axillary nodes
4. Subscapular (posterior) axillary nodes
5. Pectoral (anterior) axillary nodes

Question 4

Answer 4

Brachial plexus

Question 5

Name the primary ventral rami and three trunks of the brachial plexus as indicated by the green numbers.

Answer 5

Primary ventral rami:

1. C5
2. C6
3. C7
4. C8
5. T1

Trunks:

6. Superior trunk
7. Middle trunk
8. Inferior trunk

Question 6

Name the two nerves indicated by the green numbers.

Answer 6

1. Suprascapular nerve
2. Musculocutaneous nerve

Question 7

Name the two nerves indicated by the green numbers.

Answer 7

1. Axillary nerve
2. Radial nerve

Question 8

Name the two nerves indicated by the green numbers.

Answer 8

1. Median nerve
2. Ulnar nerve

Question 9

Name the three cords of the brachial plexus as indicated by the green numbers.

Answer 9

1. Lateral
2. Posterior
3. Medial

Question 10

Answer 10

Lateral cord of the brachial plexus

Question 11

Answer 11

Medial cord of the brachial plexus

Question 12

Answer 12

Posterior cord of the brachial plexus

Question 13

Name the structure and also name what it arises from proximally.

Answer 13

Musculocutaneous nerve, arises from the lateral cord of the brachial plexus.

Question 14

Name the structure and also name what it arises from proximally.

Answer 14

Median nerve, arises from both the lateral and medial cords of the brachial plexus.

Question 15

Name the structure and also name what it arises from proximally.

Answer 15

Ulnar nerve, arises from the medial cord of the brachial plexus

Question 16

Which line marks the “surgical neck” and which line marks the “anatomical neck?”

Answer 16

1 is the anatomical neck

2 is the surgical neck

Question 17

Name these bony prominences.

Answer 17

1. Greater tuberosity
2. Lesser tuberosity

Question 18

Name these ligaments

Answer 18

1. Coracoacromial ligament
2. Acromioclavicular ligament
3. Trapezoid ligament (a coracoclavicular ligament)
4. Conoid ligament (a coracoclavicular ligament)
5. Joint capsule of glenohumeral ligaments

Question 19

What is this triangle called?

Answer 19

Clavipectoral triangle

Question 20

Name the muscle, origin, insertion, innervation, and action.

Answer 20

Pectoralis minor. Originates on ribs 3 to 5, inserts on the coracoid process. Innervated by medial pectoral nerve of the brachial plexus. Stabilizes the scapula and pulls it forward against posterior surface of the thorax.

Question 21

Name the vein and the groove in which it is contained in the shoulder.

Answer 21

Cephalic vein, contained in the deltopectoral groove.

Question 22

Name the muscle, origin, insertion, innervation, and action.

Answer 22

Pectoralis major. The superior part of the muscle that originates at the clavicular head acts to flex the extended humerus. The inferior part of the muscle that originates at the sternocostal head acts to extend the flexed humerus. The insertion is at the lateral lip of the intertubercular groove. Innervation by the medial and lateral pectoral nerves of the brachial plexus.

Question 23

Name the muscle, origin, insertion, innervation, and action.

Answer 23

Subclavius muscle. Originates on the junction of the rib and first costal cartilage and inserts on the inferior surface of the middle third of the clavicle. Supplied by the nerve to subclavius (from C5). Acts to anchor and depress the clavicle.

Question 24

Name the muscle, origin, insertion, innervation, and action.

Answer 24

Serratus anterior. Originates on ribs 1-9, inserts on anterior medial edge of the scapula. Innervated by the long thoracic nerve of the brachial plexus. Acts to protract the scapula and can help rotate it superiorly.

Question 25

Name the artery and the artery that it arose from.

Answer 25

Axillary artery, arose from the subclavian artery.

Question 26

Name the artery and the artery that it arose from.

Answer 26

Lateral thoracic artery, a branch that arose from the 2nd segment of the axillary artery.

Question 27

Name the artery and the artery that it arose from.

Answer 27

Subscapular artery, arose from the 3rd segment of the axillary artery.

Question 28

Name the artery and the artery that it arose from.

Answer 28

Anterior circumflex humeral artery, arose from the 3rd segment of the axillary artery.

Question 29

Name the artery and the artery that it arose from.

Answer 29

Posterior circumflex humeral artery, arose from the 3rd segment of the axillary artery.

Question 30

Answer 30

1. Cephalic vein
2. Basilic vein
3. Axillary vein

Question 31

Answer 31

1. Suprascapular artery
2. Dorsal scapular artery