Brachial Plexus and Axilla

Question 1

Where are spinal nerves segmental?

Answer 1

T2-T11

Seen by dorsal primary rami

Question 2

Plexus

Answer 2

Ventral rami refuse so that each nerve has more than one spinal cord level in it

Question 3

Acronym for pattern of plexus

Answer 3

Real truckers drink cold beer

Roots, trunks, divisions, cord, branches

Question 4

Trapezius innervated by

Answer 4

Accessory nerve

Question 5

Spinal nerves included as roots of brachial plexus

Answer 5

C5, C6, C7, C8, T1

Question 6

Roots lie between which two muscles?

Answer 6

Anterior and middle scalene

Question 7

What runs between anterior and middle scalene

Answer 7

Subclavian artery, brachial plexus roots

Question 8

Trunks and which roots compose them

Answer 8

Superior (C5 and C6)
Lower roots (C8 and T1)
Middle trunk (C7)

Question 9

What do trunks divide into and what are they named for

Answer 9

Anterior and posterior divisions

Location to clavicle

Question 10

Cords and how they are named and what they are ocmposed of

Answer 10

Lateral - anterior of superior and middle
Medial - anterior of inferior
Posterior - posterior of inferior, superior, and middle

Named for location to axillary artery

Question 11

Where are cords located?

Answer 11

Axilla

Question 12

What do anterior and middle cords supply?

Answer 12

Flexor muscles and anterior aspects of upper limb

Question 13

Posterior cords supply

Answer 13

Extensor muscles and posterior of upper limb

Question 14

Branches of Medial and lateral cords and where they come from

Answer 14

Musculocutaneous - lateral
Ulnar - medial
Median - lateral and medial

Question 15

Musculocutaneous branch innervation

Answer 15

Flexor component of the arm and becomes cutaneous name in forearm

Question 16

Musculocutaneous in the forearm called

Answer 16

Lateral antebrachial cutaneous nerve

Question 17

Ulnar branch innervates

Answer 17

Muscles and skin in forearm and hand…none in arm

Question 18

Median branch innervates

Answer 18

Anterior of forearm and some hand

Carpal tunnel syndrome

Question 19

Branches of posterior cord and location

Answer 19

Axillary - through quadrangular space

Radial - winds around humerous and travels down

Question 20

Axillary branch innervation

Answer 20

Deltoid muscles and skin, teres minor

Question 21

Radial branch innervation

Answer 21

all extensors of arm and anterior of forearm

Question 22

Branches from roots and which roots

Answer 22

Dorsal scapular - C5

Long thoracic - C5-C7

Question 23

Dorsal scapular location and innervation

Answer 23

Runs along levator scapulae

innervates levator scapulae and rhomboids

Question 24

Long thoracic innervation and location

Answer 24

Superior surface of serratus anterior (odd)

Serratus anterior

Question 25

Injury to long thoracic nerve leads to

Answer 25

winged scapula

Question 26

Branches from superior trunk

Answer 26

Suprascapular | Nerve to the subclavius

Question 27

Suprascapular nerve

Answer 27

Runs deep to trapezius | Innervates supraspinatus and infraspinatus muscle

Question 28

Branches from lateral cord and what innervations

Answer 28

Lateral pectoral - pectoralis major

Question 29

Branches from medial cord and what they innervate?

Answer 29

Medial pectoral - pectoralis minor and some major Medial cutaneous of arm Medial cutaenous of forearm ^^Both supply skin on medial side of structures

Question 30

Lateral pectoral nerve and medial pectoral nerve locatons

Answer 30

Lateral is actually medial to the medial pectoral nerve

Question 31

Branches from posterior cord

Answer 31

Upper and lower subscapular nerves | Thoracodorsal nerve

Question 32

Upper and lower subscapular innervate

Answer 32

Both - subscapularis | Lower - teres major

Question 33

Toracodorsal nerve

Answer 33

Between subscapular nerves | Runs through axilla to innervate latissimus dorsi

Question 34

As you move down spinal cord of brachial plexus, innervation pattern

Answer 34

Moves down the limb

Question 35

Anterior/posterior organization of plexus

Answer 35

Anterior - innvervates mostly flexors | Posterior - mostly extensors

Question 36

Axilla anterior borders

Answer 36

Pectoralis major and minor

Question 37

Axilla posterior borders

Answer 37

Subscapularis, teres major, and latissimus dorsi

Question 38

Axilla medial border

Answer 38

Serratus anterior

Question 39

Axeilla lateral border

Answer 39

Humerus

Question 40

Axilla inferior border

Answer 40

Skin and fascia at teres major level

Question 41

How to axilla communcate with neck?

Answer 41

Cervico-axillary canal

Question 42

Subclavian artery and where it is renamed

Answer 42

Major supply to upper limb | Renamed at first rib to axillary artery

Question 43

Where is axillary artery renamed?

Answer 43

Border of teres major to brachial artery

Question 44

How is axillary artery divided into regions and what are they?

Answer 44

Pectoralis minor Proximal Deep Distal

Question 45

Proximal part of axillary

Answer 45

Superior thoracic artery

Question 46

Deep part of axillary divides into

Answer 46

Toracoacromial artery | Lateral thoracic artery

Question 47

Distal part of axillary artery

Answer 47

Subscapular artery Anterior humeral circumflex artery Posterior humeral circumflex artery

Question 48

Superior thoracic artery supplies

Answer 48

Thoracic wall

Question 49

Lateral thoracic artery Runs near

Answer 49

long thoracic nerve

Question 50

Surgical head of humerous

Answer 50

Posterior humeral circumflex artery

Question 51

Brachial artery branches

Answer 51

Deep brachial artery Radial and ulnar Common interosseous artery

Question 52

Deep brachial artery supply

Answer 52

Mostly supplies posterior branch of arm

Question 53

Radial and ulnar arteries supply

Answer 53

anterior compartment of forearm and hand

Question 54

Common interosseous artery divides into and what to they supply

Answer 54

Anterior and posterior interosseous arteries | Supply those compartments of forearm

Question 55

Collateral circulation

Answer 55

Common near joints | Alternate routes of circulation

Question 56

Anastomosis

Answer 56

Communication between vessels

Question 57

Collateral circulation around elbow

Answer 57

Collateral branches from brachial and deep brachial anastomose with Recurrent branches from radial, ulnar, and common interosseous arteries