Block 12- Week 1= Arm And Brachial Plexus

Front 1

Trapezius

Back 1

O- external occipital protuberance, nuchal ligament, T1-3

I- upper edge of scapula spine, acromion and lateral 1/3 of clavicle

Role- elevates the scapula for shrugging

N- accessory nerve (motor), ventral rami of C3+4 (proprioceptive)

Front 2

Latissiumi Dorsi

Back 2

O- T6-12 spinous processes, iliac crest and lumbrosacral fascia

I- intertubercule groove humerus
R- extension and internal rotation of arm
N- thoracodorsal nerve

Front 3

Levator Scapulae

Back 3

O- C1+2 transverse processes, C3+4 posterior tubercles
I- scapula upper medial superior angle
R- elevate the scapula (assist trapezius)
N- C3-5

Front 4

Rhomboid Major or Minor? Then state the role

O- C7 and T1 spinous processes
I- Medial border of the scapula between superior angle and root of the spine

Back 4

Minor

Elevate and retract the scapula- so up and back shoulder

Front 5

Rhomboid Major or Minor?Then state the role

O- T2-5 spinous processes and intervening ligaments
I- Medial border of the scapula between inferior angle and root of the spine

Back 5

Major

Elevate and retract the scapula- so up and back shoulder

Front 6

Pec Major- normal + name the two different heads origin

Back 6

O- Clavicular Head- medial 1/2 of anterior clavicle.
Sternocostal head- front of sternum and front of first 6 costal cartilages

I- lateral lip of intertubercular sulcus of humerus
R- adducts and internally rotates

N- medial and lateral pectoral

Front 7

Pec minor

Back 7

O- Ribs 3-5
I- Coracoid process
R- Depression of scapula
N- medial pectoral

Front 8

O-First rib costochondal junction
I-clavicle subclavian groove

R- depresses the shoulder/clavicle

Back 8

Subclavicus
N- nerve to subclavicus

Front 9

Serratus Anterior

Back 9

O- ribs 1-8 anterolateral aspects
I- medial border of the scapula
R- pulls scapula around ribcage
N- long thoracic nerve

Front 10

Deltoid

Back 10

O- lateral 1/3 of the anterior border of clavicle, acromion lateral border, and inferior lip of spine of scapula

I- deltoid tuberosity of humerus
R- anterior=flexor, posterior= extensor, lateral=abductor
N- axillary nerve

Front 11

Name the 4 rotator cuff muscles

Back 11

Supraspinatous

Infra spinatous

Teres minor

Subscapularis

Front 12

O- almost all anterior aspect of scapula

I- lesser tubercle of the humerus
R- internal rotation

Back 12

Subscapularis
N- upper and lower subscapular nerve

Front 13

O- supraspinous fossa
I- greater tubercle of humerus
R- abduction

Back 13

Supraspinatous

N- suprascapular

Front 14

Infraspinatus

Back 14

O- upper 2/3 of infraspinous fossa
I- middle facet on greater tuberosity
R- external rotation
N- suprascapular

Front 15

Teres minor

Back 15

O- lower 1/3 of infraspinous fossa
I- lowest facet on greater tuberosity
R- external rotation
N- axillary

Front 16

Which is more inferior teres minor or major?

Back 16

Teres major

Front 17

Teres major

Back 17

O- lower lateral border of scapula
I- medial lip of intertubercular groove
R- adductor
N-lower subscapular nerve

Front 18

What are the 3 muscles innervated by the musculocutaneous nerve?

Back 18

Biceps Brachii

Brachialis

Coracobrachialis

Front 19

Biceps Brachii (2 heads)

Back 19

Origin- long head: supraglenoid tubercle. short head: coracoid process.

I- radial tuberosity and deep antebrachial fascia via the aponeurosis
R- Supinator and flexes elbow

N- musculocutaneous

Front 20

Brachialis

Back 20

O- humerus anterior surface of the bottom
I- ulnar tuberosity and coronoid process
R- flexes the elbow
N- musculocutaneous

Front 21

Coracobrachialis

Back 21

O- coracoid process
I- medial surface of middle of humerus
R- flex shoulder
N- musculocutaneous

Front 22

Triceps (3 heads)

Back 22

O- long: infraglenois tubercle lateral: posterior of shaft of the humerus. medial: medial shaft of humerus

I- olecranon of the ulna
R- extensor of elbow
N- radial

Front 23

State the roots of the following nerve, and what it supplies:

- Musculcutaneous

Back 23

C5,6-7
BBC muscles motor

Front 24

State the roots of the following nerve, and what it supplies:

- Axillary

Back 24

C5+6
Deltoid and teres minor motor

Front 25

State the roots of the following nerve, and what it supplies:

- Median

Back 25

C (5) 6, 7, 8 and T1
Lateral arm and thena hand

Front 26

State the roots of the following nerve,and what it supplies:

- Radial

Back 26

C5, 6, 7, 8 and T1
Posterior arm

Front 27

State the roots of the following nerve,and what it supplies:

- Ulnar

Back 27

C8 and T1

Medial arm and little finger

Front 28

What are the roots of the brachial plexus?

Back 28

C5, 6, 7, 8 and T1

Front 29

What do the roots of the brachial plexus form and describe this arrangement

Back 29

Trunks

C5+6 superior trunk

C7 middle trunk

C8+T1 inferior trunk

Front 30

What do the trunks of the brachial plexus form and describe their arrangement

Back 30

Divisions

Superior A and P

Middle A and P

Inferior A and P

Front 31

What do the divisions of the brachial plexus form and describe their arrangement

Back 31

Cords

Lateral- from superior and middle anterior division

Posterior- from all 3 posterior divisions

Medial- from inferior anterior division

Front 32

What do the divisions of the brachial plexus form and describe their arrangement

Back 32

Nerves

Musculocutaneous- lateral

Axillary- posterior

Median- lateral and medial

Radial- posterior

Ulnar- medial

Front 33

Where does the long thoracic nerve come from in relation to the brachial plexus?

Back 33

C5 root

Serratus Anterior

Front 34

Where does the thoracodorsal nerve come from in relation to the brachial plexus?

What does it supply?

Back 34

Posterior cord

Latissimus Dorsi

Front 35

Name the 5 lymph node groups of the breast which are in the arm, and draw a diagram to show where they are

Back 35

Central

Apical

Lateral

Subscapular

Pectoral

Front 36

Describe the relation of the axillary vein and artery

Back 36

The axillary vein is antero-lateral to the axillary artery, which is why when inserting a central line you have to be careful not to go to far and hit the artery.

Direct medially when putting a central line in

Front 37

Describe/draw the hands nerve supply

Back 37

On the palmar side

Thumb to half of ring finger is the median nerve

Half of ring finger to little finger is the ulnar nerve

On the back

Thumb side, not including the tops of the first 3 fingers is the radial nerve

Top of the thumb- half of the ring finger is the median nerve

Top of the little finger, half of the ring finger and half of the back of the hand is the ulnar nerve

Front 38

Describe (generally) the muscles that each of the following nerves supplies:

-Musculocutaneous

-Axillary

-Median

-Radial

-Ulnar

Back 38

-Musculocutaneous- arm

-Axillary- deltoid

-Median- flexor- forearm and thenar

-Radial- extensor

-Ulnar- flexor- hand (-thenar) as well as the flexor digitorum profundus and flexor carpi ulnaris

Front 39

What causes and what are the consequences of Erbs Palsy

Back 39

When during a difficult birth the baby has to be pulled out and it causes damage to the shoulder and consequently tears C5 root of the plexus

Means that the arm hangs down with fingers cupped and facing backwards

Front 40

What causes and what are the consequences of Klumpke's puress

Back 40

During a difficult birth the baby has to be pulled out by its arm and it causes damage to the lower root T1 of the plexus

Means that there are hand problems and basically that the hand is not useable

Front 41

Draw and label the brachial plexus

Back 41