Anatomy: Upper Limb (Clinical) Flashcards
what provides the nerve supply to the upper limbs?
the brachial plexus
what forms the brachial plexus?
anterior rami of C5-T1 spinal nerves
what are the roots of the brachial plexus?
anterior rami of C5-T1
what do the roots of the brachial plexus form?
the trunks
what are the three trunks of the brachial plexus?
superior
middle
inferior
what do the trunks of the brachial plexus give rise to?
the divisions - each gives an anterior and posterior division
what forms the superior trunk of the brachial plexus?
combined anterior rami of C5 and C6
what forms the middle trunk of the brachial plexus?
anterior ramus of C7
what forms the inferior trunk of the brachial plexus?
combined anterior rami of C8 and T1 spinal nerves
what do the divisions of the brachial plexus form?
the cords
what are the cords of the brachial plexus named after?
their relationship to the axillary artery
what are the three cords of the brachial plexus?
medial
lateral
posterior
what forms the medial cord of the brachial plexus?
anterior division of the inferior trunk
what forms the lateral cord of the brachial plexus?
anterior divisions of the superior and middle trunks
what forms the posterior cord of the brachial plexus?
the posterior divisions of all three trunks
what forms the named nerves of the brachial plexus?
the cords
what are the five named nerves of the brachial plexus?
ulnar musculocutaneous axillary radial median
what forms the musculocutaneous nerve?
lateral cord
what forms the ulnar nerve?
medial cord
what are the two divisions of the posterior cord of the brachial plexus?
axillary nerve
radial nerve
what forms the median nerve?
medial and lateral cords
what makes up the blood supply to the anterior arm?
brachial artery
brachial vein
what makes up the blood supply to the posterior arm?
profunda brachii artery + vein
ulnar collateral artery
what makes up the blood supply to the anterior forearm?
radial and ulnar arteries
venae comitantes