posterior triangle and brachial plexus

Question 1

posterior triangle boundaries

Answer 1

posterior edge of scm
anterior edge of trapezius
middle third of clavicle
occipital bone

Question 2

what is under the posterior triangle

Answer 2

splenius capitis
levator scapulae
scalenes

Question 3

veins of posterior triangle

Answer 3

external jugular vein
1. transverse cervical vein
2. suprascapular vein

Question 4

arteries of posterior triangle

Answer 4

arise from subclavian
thyrocervical trunk
- transverse cervical artery
- suprascapular artery

Question 5

superficial nerves of posterior triangle (erbs point)

Answer 5

transverse cervical nerve
lesser occipital nerve
greater aurical nerve
supraclavicular nerves

Question 6

transverse cervical nerve location

Answer 6

c2/ c3

Question 7

lesser occipital nerve location

Answer 7

c2/ c3

Question 8

greater aurical nerve location

Answer 8

c2/ c3

Question 9

supraclavicular nerves location

Answer 9

c3/ c4

Question 10

why is erbs point important?

Answer 10

is the site where the 4 branches of brachial plexus emerge from

Question 11

muscles in the posterior triangle

Answer 11

splenius capitis
levator scapulae
posterior scalene
anterior scalene
middle scalene

Question 12

parts of the brachial plexus

Answer 12

ventral rami:5
trunks: 3
divisions: 6
cords: 3
branches: 5

Question 13

the lateral cord is formed by?

Answer 13

anterior divisions of upper and middle trunks

Question 14

the posterior cord is formed by?

Answer 14

posterior division of all trunks

Question 15

the medial cord is formed by?

Answer 15

anterior divisions of lower trunk

Question 16

nerve branches of anterior divisions innervate what?

Answer 16

muscles in flexor compartments

Question 17

nerve branches of posterior divisions innervate what?

Answer 17

muscles in extensor compartments

Question 18

first intercostal location

Answer 18

T1

Question 19

dorsal scapular location

Answer 19

C5

Question 20

dorsal scapular innervates the:

Answer 20

rhomboids
levator scapulae

Question 21

long thoracic location

Answer 21

C5/ C6/ C7

Question 22

long thoracic innervates the:

Answer 22

serratus anterior

Question 23

nerves on superior trunk

Answer 23

suprascapular
to subclavius

Question 24

suprascapular location

Answer 24

C5/ C6

Question 25

suprascapular innervates the:

Answer 25

supraspinatus infraspinatus

Question 26

branches on lateral cord

Answer 26

lateral pectoral

Question 27

lateral pectoral location

Answer 27

C5/ C6/ C7

Question 28

branches on posterior cord

Answer 28

upper subscapular thoracodorsal lower subscapular

Question 29

upper subscapular location

Answer 29

C5/ C6

Question 30

upper subscapular innervates the:

Answer 30

subscapularis

Question 31

thoracodorsal location

Answer 31

C6/ C7/ C8

Question 32

thoracodorsal innervates the:

Answer 32

latissimus dorsi

Question 33

lower subscapular location

Answer 33

C5/ C6

Question 34

lower subscapular innervates the:

Answer 34

subscapularis teres major

Question 35

medial pectoral location

Answer 35

C8/ T1

Question 36

medial pectoral innervates the:

Answer 36

pectoralis major and minor

Question 37

medial cutaneous nerve of arm location

Answer 37

T1

Question 38

medial cutaneous nerve of forearm

Answer 38

C8

Question 39

musculocutaneous branch

Answer 39

lateral cord C5/ C6/ C7

Question 40

axillary branch

Answer 40

posterior cord C5/ C6

Question 41

radial branch

Answer 41

posterior cord C5/ C6/ C7/ C8/ T1

Question 42

median branch

Answer 42

median and lateral root C5/ C6/ C7/ C8/ T1

Question 43

ulnar branch

Answer 43

medial cord C8/ T1

Question 44

Arm compartment nerves

Answer 44

musculocutaneous radial axillary

Question 45

forearm compartment nerves

Answer 45

median ulnar radial

Question 46

arm flexors

Answer 46

musculocutaneous

Question 47

arm extensors

Answer 47

radial and axillary

Question 48

forearm flexors

Answer 48

median and ulnar

Question 49

forearm extensors

Answer 49

radial

Question 50

upper brachial plexus injuries produce:

Answer 50

erbs palsy

Question 51

lower brachial plexus injuries produce:

Answer 51

klumpke's plasy

Question 52

birth palsy type one

Answer 52

upper plexus damage erbs plasy

Question 53

birth palsy type 2

Answer 53

all plexus both palsies

Question 54

birth palsy type 3

Answer 54

lower plexus damage klumpke's palsy

Question 55

superficial compartment of pectoral region

Answer 55

skin, fascia, breasts

Question 56

breast organized by:

Answer 56

cooper's ligaments

Question 57

what may happen as a result of breast surgery

Answer 57

injury to long thoracic nerve causing scapular winging

Question 58

pectoralis major attachments

Answer 58

clavicle sternocostal head sternum 6 upper costal cartilages

Question 59

pectoralis major actions

Answer 59

flexes and adducts the arm adducts and medially rotates the arm extend and flex arm

Question 60

pectoralis minor attachments

Answer 60

coracoid process ribs 3- 5

Question 61

pectoralis minor actions

Answer 61

protracts the scapula

Question 62

pectoralis minor innervation

Answer 62

medial pectoral nerve

Question 63

pectoralis major vessels

Answer 63

thoracoacromial artery cephalic vein

Question 64

pectoralis major innervation

Answer 64

lateral pectoral nerve supraclavicular nerves