The lymph nodes of the axillary region receive lymph mainly from the

upper limb and mammary gland

Explanation:

The lymph nodes of the axillary region or the axillary lymph nodes drain lymph vessels from the breast, from thin walls of the chest and the upper part of abdomen, and from the upper limb. They can be divided in groups according to their location.

These lymph nodes has a role in development of breast cancer and its metastasis.