upper limb theory

Question 1

lymphatic drainage of mammary gland

Answer 1

axillary lymph node - central ,apical, medial , lateral and poster also ant 
supraclavicular 
internal mammary
cephalic 
sub diaphragmatic

Question 2

ulnar nerve course

Answer 2

In axilla lies medial to 3rd part of axillary artery and lateral to axillary vein
• Enters arm as part of main neurovascular bundle & runs distally along medial side of
brachial artery up to level of insertion of Coraco-brachialis
• Here pierces medial intermuscular septum and enters posterior compartment of arm
and runs downwards to back of medial epicondyle, here it is lodged in a groove and
easily palpated.
• NO BRANCHES IN AXILLA & ARM.
• Enters forearm by passing between two heads of (FCU) flexor carpi ulnaris, upper 1/
3rd - vertically downwards under FCU, in lower 2/3rd superficial and lateral to FCU,
here ulnar nerve and artery descend together where artery is in lateral side
● Enters palm by passing superficial to flexor retinaculum lying just lateral to pisiform,
here it is covered by a fascial band (volar carpal ligament), the cavity formed by it is
known as ulnar tunnel