Ch 9: Blood supply, Innervation, and Lymph. Drainage of SH girdle

Question 1

brachial plexuses formed by what

Answer 1

ANT primary rami of roots from C5-T1 (including C8)

Question 2

brachial plexus divided into (mnemonic)

Answer 2

roots, trunks, divisions, cords, branches, individual nerves
“rugby teams drink cold beer (nightly)”

Question 3

which root(s) unite to form SUP trunk

Answer 3

C5 and C6

Question 4

which root(s) form middle trunk

Answer 4

C7

Question 5

3 trunks

Answer 5

superior, middle, and inferior

Question 6

which root(s) form the INF trunk

Answer 6

C8 and T1

Question 7

each trunk divides into an _____ and _____ ________

Answer 7

ANT and POST division

Question 8

which divisions unite to form the the POST cord

Answer 8

POST division of all 3 trunks (SUP, middle, and INF)

Question 9

the LAT cord is formed by

Answer 9

the ANT division of SUP and middle trunks

Question 10

the MED cord is formed by

Answer 10

the ANT division of the INF trunk

Question 11

the cords are named for their spatial orientation around the 2nd part of the ______ ____

Answer 11

axillary artery

Question 12

compression of nerve means

Answer 12

squished by bone

Question 13

entrapment of a nerve means

Answer 13

squished by soft tissue (muscle)

Question 14

3 cords of brachial plexus

Answer 14

LAT, POST, and MED

Question 15

what’re the terminal branches (MARMU)

Answer 15

musculocutaneous, axillary, radial, median, ulnar

Question 16

the dorsoscapular n comes from which root(s) and innervates what muscles

Answer 16

C5
levator scapulae, rhomboids

Question 17

the long thoracic nerve comes from which root(s) and innervates which muscle

Answer 17

C5, 6, 7,
serratus ANT

Question 18

the phrenic nerve comes from which root(s) and innervates what

Answer 18

C3, 4, 5
diaphragm

Question 19

n to subclavius comes from which root(s) and which trunk

Answer 19

C5,6
SUP trunk

Question 20

suprascapular nerve comes from which root(s) and which trunk and innervates what

Answer 20

C5,6
SUP trunk
supraspinatus and infraspinatus

Question 21

which 3 nerves come from the MED cord (C7, C8, T1)

Answer 21

MED pectoral n, MED brachial cutaneous n, MED antebrachial cutaneous n

Question 22

which 2 nerves come from the SUP trunk

Answer 22

n to subclavius and suprascapular n

Question 23

which 3 nerves come from the roots

Answer 23

dorsoscapular, long thoracic, phrenic

Question 24

MED pectoral n comes from which root(s) and innervates what mms

Answer 24

C8, T1
pec minor and major

Question 25

MED brachial cutaneous n comes from which root(s) and innervates what

Answer 25

T1 cutaneous sensation to MED arm

Question 26

MED antebrachial cutaneous n comes from which root(s) and innervates what

Answer 26

C8, T1 cutaneous sensation to MED forearm

Question 27

which terminal branches come from the MED cord (2)

Answer 27

MED branch of median n and the ulnar nerve

Question 28

numbers that match mnemonic RTDCB

Answer 28

5, 3, 6, 3, 5

Question 29

ulnar nerve comes from which root(s)

Answer 29

(C7), C8, T1

Question 30

the LAT cord comes from root(s) and has which nerve coming off it

Answer 30

C5,6,7 LAT pectoral n

Question 31

LAT pectoral nerve comes from which root(s) and innervates what

Answer 31

C5,6,7 pec. major

Question 31

what terminal branches come from the LAT cord C5,6,7

Answer 31

LAT branch of median n and the musculocutaneous n C5,6,7

Question 32

individual 3 nerves that come from POST cord C5,6,7,8,T1

Answer 32

upper subscapular C5,6 thoracodorsal (C6),7,8 lower subscapular C5,6

Question 33

the upper subscapular n comes from which root(s) and innervates what

Answer 33

C5,6 subscapularis

Question 34

the thoracodorsal n comes from which root(s) and innervates what

Answer 34

(C6),7,8 lat dorsi

Question 35

the lower subscapular n comes from which root(s) and innervates what

Answer 35

C5,6 subscapularis and teres maj.

Question 36

2 terminal branches that come from the POST cord

Answer 36

axillary n C5,6 radial n C5-(T1)

Question 37

axillary n comes from which root(s) and innervates what

Answer 37

C5,6 deltoid, teres minor; cutaneous to LAT shoulder

Question 38

the radial n comes from which root(s) and innervates what

Answer 38

C5,6,7,8,(T1) muscles in the POST arm and forearm; cutaneous to the arm, forearm and 1st-3rd digit posteriorly

Question 39

the median n comes from which root(s) and innervates what

Answer 39

C5,6,7,8,(T1) mms of ANT forearm, some intrinsic hand mms; cutaneous to the 1st to LAT half of 4th digit anteriorly