The Axilla & Pectoral Region (circulation)

Question 1

What are the 3 divisions in relation to the anterior scalene muscle of the subclavian artery?

Answer 1

Part 1 is medial to the anterior scalene muscle

Part 2 is posterior to the anterior scalene muscle

Part 2 is lateral to the anterior scalene muscle

Question 2

What are the 3 branches of the first part of the subclavian artery?

Answer 2

1. internal thoracic (mammary) a.
2. vertebral a.
3. thyrocervical arterial trunk

Question 3

What are the four branches of the thyrocervical arterial trunk?

Answer 3

1. transverse cervical artery (deep & superficial branch)
2. inferior thyroid artery
3. ascending cervical artery
4. suprascapular artery

Question 4

What is the trunk that comes off the subclavian artery’s second part and what are the two branching arteries off that?

Answer 4

A. Costocervical arterial trunk

        1. Supreme intercostal artery
        2. deep cervical artery

Question 5

What is the transition point from subclavian artery to axillary artery?

Answer 5

later border of 1st rib

Question 6

What are the three parts of the axillary artery?

Answer 6

Part 1: superior thoracic artery

Part 2: thoracoacromial trunk

Part 3: subscapular artery, anterior & posterior circumflex humeral

Question 7

What are the 4 branches of the thoracoacromial trunk?

Answer 7

1. pectoral branch
2. deltoid branch
3. acromial branch
4. clavicular branch

Question 8

What are the 2 branches of the subscapular artery?

Answer 8

1. circumflex scapular a.

2. thoracodorsal a.

Question 9

What are the 5 anastomosing arterial branches for the scapular anastomoses?

Answer 9

1. suprascapular a.
2. dorsal scapular a.
3. posterior intercostal a.
4. circumflex scapular artery
5. thoracodorsal a.

Question 10

What is the drainage pectoral and axillary regions?

Answer 10

1. axillary vein

Question 11

What are the two superficial veins of the arm & forearm?

Answer 11

1. basilic veins

2. cephalic vein

Question 12

What are the 2 large named arteries that have tributaries that provide blood to the pectoral, shoulder, and axillary regions?

Answer 12

1. Subclavian

2. Axillary