Upper Limbs

Question 1

Posterior divisions of ventral rami innervate

Answer 1

Elevators/extensors

Question 2

Anterior divisions of ventral rami innervate

Answer 2

Depressors/flexors

Question 3

Typical brachial plexus runs from

Answer 3

C5-T1

Question 4

Prefixed plexus runs from

Answer 4

C4-C8

Question 5

Post fixed plexus runs from

Answer 5

C6-T2

Question 6

Axillary N innervates

Answer 6

Deltoid and Teres Minor

Question 7

Upper Subscapular N innervates

Answer 7

subscapularis

Question 8

Middle subscapular N/ Thoracodorsal N innervates

Answer 8

Latissimus Dorsi

Question 9

Lower Subscapular N innervates

Answer 9

Subscapularis and Teres minor

Question 10

Suprascapular N innervates

Answer 10

Supraspinatus and infraspinatus

Question 11

Brachial plexus RTDCN

Answer 11

Roots, Trunks, Divisions, Cords, Nerves

Question 12

Phrenic nerve innervates

Answer 12

diaphragm

Question 13

Phrenic nerve ventral rami roots

Answer 13

C3-C5

Question 14

Long thoracic N innervates

Answer 14

Serratus anterior

Question 15

Long thoracic nerve ventral rami roots

Answer 15

C5-C7

Question 16

Dorsal scapular N innervates

Answer 16

Rhomboids and a bit of levator scapulae

Question 17

Lateral pectoral innervates

Answer 17

pec major

Question 18

Medial pectoral innervates

Answer 18

innervates and pierces pec minor and innervates pec major

**Medial more, Lateral less**

**Medial more meat**

Question 19

What nerves/arteries can be found in triangular space?

Answer 19

circumflex scapular artery

Question 20

What nerves/arteries can be found in quadrangular space?

Answer 20

Axillary Nerve and Post circumflex humeral artery

Question 21

What innervates fingertips of digits 1-3 on posterior side?

Answer 21

Median N

Question 22

What innervates fingertips of digits 4-5 on posterior side?

Answer 22

Ulnar N

Question 23

Retinaculums around the wrist

Answer 23

Antebrachial flexor retinaculum or palmar carpal ligament

and

extensor retinaculum

Question 24

Action of lumbricals

Answer 24

Flex MCP joints

Extend Interphalangeal joints

Question 25

Insertion of lumbricals

Answer 25

extensor expansion

Question 26

Where do lumbircals arise from?

Answer 26

FDP tendons in palm

Question 27

Answer 27

Question 28

Answer 28

Question 29

Answer 29

1) Dorsal scapular N or N to rhomboids
2) Long thoracic N or N to serratus ant.
3) N to subclavius
4) Suprascapular N
5) Lateral Pectoral N
6) Medial pectoral N
7) Medial brachial cutaneous N
8) Medial antebrachial cutaneous N

(Note: Dorsal scapular N arises from C5 not C4 as shown)

Question 30

Answer 30

Question 31

Answer 31

Question 32

Answer 32

Question 33

Answer 33

Question 34

Answer 34

Question 35

Answer 35

Question 36

Answer 36

Question 37

Answer 37

Question 38

Answer 38

Question 39

Answer 39

Question 40

Answer 40

Question 41

Answer 41

Question 42

Answer 42

Question 43

Answer 43

Question 44

Answer 44

Question 45

Answer 45

Question 46

Answer 46