1. Axilla What is the axilla? What is IN the axilla? Blood vessels, Lymphatics, fascia, nerves…gets stuff To upper limbs to allow them to survive What is axilla’s importance to upper limb? Pyramid-shaped region (armpit) connects arm to rest of body

2. Axillary Walls

3. Axillary Contents:  Axillary a. and branches  Axillary v. and branches  Brachial Plexus (cords/branches)  Proximal biceps brachii heads, coracobrachialis m.  Axillary lymph nodes  Fat

4. Axilla Axillary sheath surrounds axillary v., a., and cords of brachial plexus (extension of prevertebral cervical fascia)

5. Axillary Artery – Segments & Branches

6. Axillary Artery

7. Infraclavicular nodes to Apical axillary nodes To lateral axillary (humeral) nodes Superficial Lymphatic Arm Drainage Deep drainage also to Supratrochlear node

10. Lymphatic Drainage of Breast  Most to axillary nodes (particularly Anterior Axillary (pectoral) Nodes)  Some to parasternal nodes  Small amount to abdominal nodes

11. What is the condition? What is likely cause?

12.  Lymph nodes of axilla (lat. Breast) are easily removable.  Lymph nodes/metastases into thorax (med. Breast) are difficult or impossible to remove/treat.

13. http://mywebpages.comcast.net/wnor/homepage.htm http://anatomy.med.umich.edu/courseinfo/learning_materials.html http://www.gwc.maricopa.edu/class/bio201/skull/skulltt.htm http://www.med.mun.ca/anatomyts/index/first.htm http://www.lumen.luc.edu/lumen/meded/grossanatomy/learnem/learnit.htm Some very good Anatomical Websites: (use with caution, I did not review all the content for accuracy)