Arteries of the upper limb

Question 1

Name the parts of the axillary artery !

Answer 1

The first part: superior to the pectoralis major
The second part: posterior to the pectoralis major
The third part: inferior to (same)

Question 2

What is the branch that originates from the first part of the axillary artery?

Answer 2

It’s the superior thoracic artery (small, supplies the anterior and medial wall of the axilarry pit, originates from the anterior part of the axillary artery lumen)

Question 3

What is the branch that originates from the second part of the axillary artery?

Answer 3

There are 2 branches:

1) Thoracoacromial a. - short, anterior surface, penetrates the clavi-pectoral fascia and gives 4 branches: DELTOID, CLAVICULAR, ACROMIAL AND PECTORAL
2) Lateral thoracic artery - anterior surface, supplies medial and anterior walls of the axillary pit, contributes to the blood supply of the breast.