Gross Anatomy Exam 2

Front 1

Describe the clinical significance of the deltopectoral triangle.

Back 1

can find the coracoid process hear which is a good landmark for performing a brachial plexus block or diagnosing shoulder dislocation

Front 2

What is a good area to inject anesthesia for the deep structures of the upper limb and skin distally?

Back 2

into the axillary sheath located btwn post borders of the sternocleidomastoid and clavicle

Front 3

Where should the humerus be in comparison to the coracoid process?

Back 3

horizontal

Front 4

What are the bony borders of the axilla?

Back 4

scapula, clavicle, and 1st rib

Front 5

What are the muscular walls of the axilla?

Back 5

pectoralis major and minor, teres major, latissimus dorsi, subscapularis, and serratus ant

Front 6

What are the contents of the axilla in the transverse plane?

Back 6

axillary a & v and the cords of the brachial plexus (all located within the axillary sheath)

Front 7

What are the borders of the first part of the axillary a and what are the branches?

Back 7

1st rib to pectoralis minor
superior (highest) thoracic a

Front 8

What does the superior (highest thoracic a supply?

Back 8

serratus ant, muscles of the intercostal spaces 1-2, subclavius, and pectoral muscles

Front 9

What are the border and branches of the 2nd part of the axillary a?

Back 9

under the pectoralis minor
thoracoacromial a and lateral thoracic a

Front 10

Which arteries coming off of the axillary a have variable origins?

Back 10

thoracoacromial a, suprascapular a, and subscapular a

Front 11

What comes off of the 3rd part of the axillary a?

Back 11

anterior and posterior circumflex a and subscapular a

Front 12

What are the branches off of the subscapular?

Back 12

circumflex scap a and thoracodorsal a

Front 13

What does the ant circumflex humeral a supply?

Back 13

humeral head and shoulder joint

Front 14

What does the post circumflex humeral a join w/?

Back 14

comes through quadrangular space to join with ant circumflex a and several other arteries

Front 15

Name the different branches of the post circumflex humeral artery?

Back 15

60%- from axillary
17% from subscapular a
15% from the profunda brachi
6% the profunda brachi branches from the post circumflex humeral a

Front 16

What are the 3 main nodes of lymph associated with the afferent lymphatic drainage?

Back 16

brachial (lat), subscapular (post), and pectoral (anterior)

Front 17

What areas drain into the brachial lymph node?

Back 17

scapula and back

Front 18

What areas drain into the subscapular lymph?

Back 18

ant wall of the thorax and abd

Front 19

What areas drain into the pectoral lymph?

Back 19

btwn clavicle and umbilicus

Front 20

What happens when cancer cells block the lymph vessels and nodes?

Back 20

alternate routes arise

Front 21

Is there anyway to stop profuse bleeding in the arm?

Back 21

by compressing axillary against the humerus or the downward motion between the clavicle and sternocleidomastoid to press the subclavian into the first rib

Front 22

What a anastamose around the scapula?

Back 22

dorsal, supra, and subscapular a along with transverse cervical and intercostalis a (must consider anastamoses when trying to stop bleeding)

Front 23

What are the borders of the triangular space (1)? and contents?

Back 23

teres minor and major and long head of the tricep, subscapularis and lateral border of the scapula
circumflex scapular a

Front 24

What are the borders of the triangular space (2)? and contents?

Back 24

teres major, medial shaft of humerus, and long head of the tricep
radial n and profunda brachii a

Front 25

What are the borders of the quadrangular space?

Back 25

teres minor, neck of the humerus, teres major, subscapularis, and the long head of the tricep

Front 26

What are the variations of the brachial plexus?
postfixed?
prefixed?

Back 26

C6-T2
C4-C8

Front 27

What is the origin and the distribution of the dorsal scap a?

Back 27

predominantly C5 w/ C4
rhomboids and levator scapulae

Front 28

What is the origin and distribution of the long thoracic?

Back 28

C5-7
serratus ant

Front 29

What is the origin and distribution of the nerve to the sublavius?

Back 29

C5-6 w/ C4
subclavius

Front 30

What is the origin and distribuation of the suprascapular?

Back 30

C5-6 w/ C4
supra and infraspinatus and the glenohumeral joint

Front 31

What is the origin and distribution of the L pectoral?

Back 31

C5-7
pec major and minor

Front 32

What is the origin and distribution of th musculocutaneous?

Back 32

C5-7
flexors of the arm

Front 33

What is the origin and distribuation of the median?

Back 33

lateral root to lateral chord C6-7
medial root to medial chord C8-T1
flexor muscles of the forearm (except flexor carpi ulnaris and the ulnar half of the flexor digitorum profundus) and the 5 hand muscles

Front 34

WHat is the origin and distribution of the medial pectoral?

Back 34

C8-T1
pec minor and major

Front 35

What is the origin and distribution of the medial brachial cutaneous?

Back 35

C8-T1
supplies the medial side of the arm

Front 36

What is the origin and distribution of the medial antebrachial cutaneous?

Back 36

C8-T1
supplies the skin of the medial side of the arm

Front 37

What is the origin and distribution of the ulnar?

Back 37

C8-T1 and often C7
1/2 of flexor muscles in the forearm and most small muscles in the hand

Front 38

What is the origin and distribution of the upper subscapular n?

Back 38

C5-6
subscapularis

Front 39

WHat is the origin and distribution of the thoracodorsal n?

Back 39

C6-8
latissimus dorsi and teres major

Front 40

What is the origin and distribution of the lower subscapular n?

Back 40

C5-6
teres minor and deltoid, shoulder joint and skin on the inferior part of the deltoid

Front 41

WHat is the origin and the distribution of the radial n?

Back 41

C5-T1
extensors of the arm and forearm

Front 42

What are the 3 cervical sympathetic trunks and what are their nerves?

Back 42

superior: C1-4
middle: C5-6
inferior: C7-T1