Pectoral Region/Axilla

Question 1

manubrium

Answer 1

upper part of the sternum

Question 2

sternoclavicular joint

Answer 2

attaches clavicle to sternum

Question 3

glenoid fossa

Answer 3

socket for the shoulder joint

Question 4

spine of the scapula

Answer 4

divides the suprapinous and infraspinous fossa on the acromion

Question 5

intertubucular groove

Answer 5

hold the long head of the biceps, intersects the greater and lesser tuberosities

Question 6

glenohumeral joint

Answer 6

connects humerus to glenoid fossa

Question 7

coracoclavicular ligaments

Answer 7

help to suspend scapula from above, consist of trapezoid and conoid ligaments

Question 8

tranverse ligament of the humerus

Answer 8

keeps tendon of long head of the biceps from popping out, runs across tubrecles

Question 9

shoulder separation

Answer 9

rupture of the acromioclavicular or corococlavicular ligaments
type 1 - incomplete
type 2 - complete tear of one
type 3 - total tear of both

Question 10

piano key deformity

Answer 10

shoulder separation, clavicle pops up after it is depressed, trapezius muscle elevates it

Question 11

delto-pectoral (clavipectoral) triangle

Answer 11

holds the cephalic vein, similar to the great saphenous vein

Question 12

pectoralis major

Answer 12

two heads (clavicular and sternocostal) - attaches to the lateral lip of the intertubucular groove - adducts the arm/flex humerus at shoulder
medial and lateral pectoral nerve supplies it

Question 13

pectoralis minor

Answer 13

originates on rib 3-5, inserts in coracoid process, pulls scapula forward (protraction)
- supplied by the medial pectoral nerve of the brachial plexus

Question 14

subclavius

Answer 14

clavicle to first rib, anchor and depresses the clavicle, supplied by nerve to the subclavius

Question 15

serratus anterior

Answer 15

originates on ribs 1-9, inserts on anterior medial edge of scapula, protracts the scapula
- supplied by long thoracic nerve of brachial plexus

Question 16

rotation of the scapula superiorly to raise arms

Answer 16

lower part of the serratus anterior and upper part of the trapezius act together to rotates scapula

Question 17

winged scapula

Answer 17

damage to long thoracic nerve, medial border of scapula moves posteriorly, noticeable when pressing against wall, cant put hands above head

Question 18

boundaries of the axilla

Answer 18

anterior = pec major/minor
medial = serratus anterior
posterior = latissimus dorsi
laterally = humerus
base = skin

Question 19

branch of the first part of the axillary artery

Answer 19

superior thoracic artery (pec minor and intercostal muscles)

Question 20

branches of the second part of the axillary artery

Answer 20

thoraco-acromial artery and lateral thoracic artery

Question 21

branches of the third part of the axillary artery

Answer 21

subscapular artery, posterior/anterior circumflex arteries

Question 22

median cubital vein

Answer 22

connects the basillic and cephalic vein

Question 23

blood supply to the breasts

Answer 23

lateral thoracic artery and internal thoracic artery