Brachial Plexus Flashcards
where is the delto-pectoral groove?
between the deltoid muscle and the clavicular head of the pectoralis major muscle
what vein passes through the delto-pectoral groove?
cephalic vein
pectoralis major nerve and action
-medial and lateral pectoral nerves
-adduction, flexion, and medial rotation
pectoralis minor nerve and action
-medial pectoral nerve
-divides the axillary artery into 3 parts
-depression and protraction
subclavius nerve and action
-nerve to the subclavius
-stabilize sternoclavicular joint
serratus anterior nerve and action
-long thoracic nerve
-protraction and rotation; holds scapula to the thoracic wall
describe a mammary gland:
-glandular tissue and fat overlying pectoralis major muscle on anterior thoracic wall
-divided into 4 quadrants
what part of the mammary gland is the axillary tail apart of?
the upper outer quadrant
what nerves supply the breast?
lateral and anterior cutaneous branches of the intercostal nerves from spinal cord segments T4-T6
what arteries supply blood to the breast?
-anterior intercostal arteries
-posterior intercostal artery branches
-thoracoacromial artery branches
-lateral thoracic artery branches
anterior/pectoral lymph nodes
-along lateral thoracic vessels
-drainage from anterior thoracic wall including central and lateral portion of breast
posterior/subscapular lymph nodes
-along subscapular vessels
-drainage from lower back and scapular region
lateral lymph nodes
-around the distal end of axillary vessels
-drainage from the arm, forearm, and hand
central lymph nodes
-several but large
-lie in the fat of axillary floor
-drainage from all three previous nodes
-efferent pass to apical lymph node
apical lymph node
-lie in the apex of the axilla, along the proximal end of the axillary vessels
-drainage chiefly from central lymph node and other three axillar nodes and deltoideopectoral lymph n ode and upper portion of breast
-efferents from subclavian trunk
