Anterior Shoulder Axilla I Flashcards
which bones make up the skeletal framework of the anterior shoulder/lower arm?
Clavicle
Scapula
Humerus
Ulna
Radius
Carpals
Metacarpal
what are the main veins, arteries, and nerves of the anterior shoulder?
-Cephalic Vein
-Thoracoacromial artery
-Long Thoracic nerve
-Medial and lateral pectoral nerves
The _______ runs up lateral aspect of arm from wrist to deltopectoral triangle and enters the triangle to join the axillary vein
cephalic vein
the _________ is bounded by pectoralis major, deltoid, clavicle
Deltopectoral triangle
the _______ Supplies blood to pec minor and major and anterior part of deltoid
thoracoacromial artery
_______ is on the surface of the serratus anterior and innervates the _________
Long thoracic nerve
- serratus anterior
The ___________ innervate the pectoralis Major, the ____ innervates pectoralis minoe
- medial and lateral pectoral nerves
- medial pectoral nerve
what is the blood supply of the breast?
Internal thoracic artery
Intercostal arteries
Lateral thoracic artery
what is the lymphatic drainage of the breast
-75% to axillary nodes
-25% to supraclavicular, parasternal, abdominal, and contralateral breast nodes
what are the main muscles of the anterior shoulder?
Pec major, pec minor, serratus anterior, subclavius
Origin of Pec major?
Clavicle, sternocostal and abdominal origin
Insertion of pec major?
Lateral lip of intertubercular groove on humerus
innervation of pec major
Lateral and medial pectoral nerves
origin of pec minor
ribs 3,4,5
insertion of pec minor
coracoid process of scapula
innervation of pec minor
medial pectoral nerve
serratus anterior origin
ribs 1-8
insertion of serratus anterior
anterior surface of medial border of scapula
innervation of serratus anterior
long thoracic nerve
origin of subclavius
sternal end of first rib
insertion of subclavius
inferior surface of clavicle
innervation of subclavius
branch of brachial plexus
what are the 6 boundaries of the axilla? what makes them up?
- Medial Wall: serratus anterior
- Anterior wall: Pec major and minor
- Lateral wall: intertubercular groove of humerus
- Posterior wall: subscapularis, teres major, lat dorsi
- Base: fascia and skin covering axilla fossa (armpit)
- Apex: aperture that opens into the base of the neck; bounded by first rib, clavicle, scapula
what are the contents of the axilla? (4)
-Axillary artery
-Axillary vein
-Brachial plexus
-Lymph nodes
how many branches does the axillary artery have? what is their relation to pec minor?
3 branches
1st branch -proximal
2nd branch- deep
3rd branch - distal
what is the artery in the first branch of the axillary artery
superior thoracic artery
what are the arteries in the second branch of the axillary artery?
-Thoracoacromial artery
-Lateral thoracic artery
