Isfb Session 06

Front 1

What direction do most shoulder dislocations occur?

Back 1

Anterior/inferior

Front 2

What muscles aid in abduction of the arm?

Back 2

Started by supraspinatus, continued by deltoid and trapezius. To get arm higher than horizontal, need to have serratus anterior rotate glenoid cavity of scapula superiorly.

Front 3

What cervical nerves contribute to the phrenic nerve?

Back 3

C3-C5

Front 4

What are the 5 major lymph node groups within the axilla? Approximate locations?

Back 4

-Pectoral (anterior)
-Subscapular (posterior)
-Humeral (lateral
-Central
-Apical

Along axillary vein, proximally to distally- Apical nodes, central nodes, humeral nodes.
Pectoral and subscapular are anterior and posterior (respectively) but they are inferior to the first three.

Front 5

What cervical nerve roots give the dermatomes in the hand?

Back 5

C6- Thumb
C7- Index and middle
C8- Ring and small finger

Front 6

What muscles are the in anterior (flexor) compartment of the arm (not forearm!)? What innervates them?

Back 6

-Biceps, brachialis, coracobrachialis
-Innervated by musculocutaneous nerve

Front 7

What muscles are in the posterior (extensor) compartment of the arm? What innervates them?

Back 7

-Triceps, anconeus
-Innervated by radial nerve

Front 8

What muscles are innervated by the anterior interosseous nerve (branch of median nerve)?

Back 8

-Pronator quadratus
-Flexor pollicis longus

Front 9

What muscles are innvervated by the axillary nerve?

Back 9

-Deltoid
-Teres minor

Front 10

What muscle is innervated by ansa cervicalis?

Back 10

-Omohyoid

Front 11

What muscles are innervated by the dorsal scapular nerve?

Back 11

-Levator scapulae (also C3 and C4)
-Rhomboideus Major
-Rhomboideus Minor

Front 12

What muscle is innervated by the facial nerve?

Back 12

-Platysma

Front 13

What muscle is innervated by cervical spinal nerves C5-C8?

Back 13

-Anterior scalene

Front 14

What muscle is innervated by the deep branch of the radial nerve?

Back 14

-Extensor carpi radialis brevis

Front 15

What muscles are innervated by a deep branch of the ulnar nerve?

Back 15

-Abductor digiti minimi
-Adductor pollicis
-Dorsal Interossei 1 through 4
-Flexor digiti minimi brevis
-Lumbricals 3 and 4
-Opponens digiti minimi
-Palmar Interossei 1 through 3

Front 16

What muscles are innervated by dorsal rami in their respective regions?

Back 16

-Spleneus Capitus
-Longissimus*
-Spinalis*
-Iliocostalis*

Front 17

What muscle is innervated by the long thoracic nerve?

Back 17

-Serratus anterior

Front 18

What muscles are innervated by the lower subscapular nerve?

Back 18

-Teres major
-Subscapularis

Front 19

What muscles are innervated by the medial and lateral pectoral nerves?

Back 19

-Pectoralis Major
-Pectoralis Minor

Front 20

What muscles are innervated by the ulnar nerve?

Back 20

-Flexor digitorum profundus (medial part)
-Flexor carpi ulnaris

Front 21

What muscles are innervated by the median nerve?

Back 21

-Flexor digitorum profundus (lateral part)
-Lumbricals 1 and 2
-Opponens pollicis
-Flexor Carpi Radialis
-Pronator Teres
-Flexor Digitorum Superficialis
-Palmaris Longus

Front 22

What muscles are innervated by the musculocutaneous nerve?

Back 22

-Biceps
-Corocobrachialis
-Brachialis

Front 23

What muscle is innervated by the subclavian nerve?

Back 23

-Subclavius

Front 24

What muscles are innervated by the posterior interosseous nerve (branch of radial nerve)?

Back 24

-Extensor carpi ulnaris
-Extensor digiti minimi
-Extensor digitorum communis

Front 25

What muscles are innervated by the radial nerve?

Back 25

-Brachioradialis
-Extensor carpi radialis longus
-Triceps Brachii

Front 26

What muscles are innervated by the recurrant branch of the median nerve?

Back 26

-Abductor pollicis brevis
-Flexor pollicis brevis

Front 27

What muscle is innervated by the spinal accessory nerve (CN XI)?

Back 27

-Trapezius

Front 28

What muscles are innervated by the suboccipital nerve?

Back 28

-Obliquus Capitis Inferior
-Obliquus Capitis Superior
-Rectus Capitis Major
-Rectus Capitis Minor

Front 29

What muscles are innervated by suprascapular nerve?

Back 29

-Supraspinatus
-Infraspinatus

Front 30

What muscle is innervated by the thoracodorcal nerve?

Back 30

-Latissimus dorsi

Front 31

What muscle is innervated by the upper subscapular nerve?

Back 31

-Subscapularis

Front 32

What muscles are innervated by ventral rami?

Back 32

-Scalenus Medius
-Scalenus Posterior
-Serratus Posterior Superior
-Serratus Posterior Inferior

Front 33

What muscles have blood supplied by the ascending cervical artery?

Back 33

-Middle scalene
-Posterior scalene

Front 34

What muscles have blood supplied by branches of the thoracoacromial trunk?

Back 34

-Platysma (clavicular br.)
-Subclavius (clavicular br.)
-Deltoid (deltoid br.)
-Pectoralis major (pectoralis br.)

Front 35

What muscles have blood supplied by the dorsal scapular artery?

Back 35

-Rhomboideus major
-Rhomboideus minor

Front 36

What muscles have blood supplied by the inferior thyroid artery?

Back 36

-Omohyoid
-Scalene anterior

Front 37

What muscles have blood supplied from the lateral thoracic artery?

Back 37

-Serratus anterior (upper part)
-Pectoralis minor
-Pectoralis major

Front 38

What muscles have blood supplied from branches of the the brachial artery?

Back 38

-Biceps
-Brachialis
-Corocobrachialis

Front 39

What muscles have blood supplied by branches of the vertebral artery?

Back 39

-Obliquus Capitis Inferior
-Obliquus Capitis Superior
-Rectus Capitis Major
-Rectus Capitis Minor

Front 40

What muscles have blood supplied from the profunda brachii artery?

Back 40

-All heads of the triceps

Front 41

What muscle has blood supplied from the scapular circumflex artery?

Back 41

-Teres minor

Front 42

What muscle has blood supplied from the subscapular artery?

Back 42

-Subscapularis

Front 43

What muscles have blood supplied by the suprascapular artery?

Back 43

-Infraspinatus
-Supraspinatus

Front 44

What muscles have blood supplied from the thoracodorsal artery?

Back 44

-Latissimus dorsi
-Teres major

Front 45

What muscles have blood supplied from the transverse cervical artery?

Back 45

-Levator scapulae
-Trapezius

Front 46

What is the strongest supinator muscle when arm is flexed?

Back 46

Biceps

Front 47

When is the coracobrachialis muscle working?

Back 47

When palm is down and you're flexing at your elbows.

Front 48

What is Erb-Duchenne palsy?

Back 48

Injury to superior brachial plexus. Causes "waiter's tip position" (arm medially rotated, elbow extended). Musculocutaneous nerve and radial nerve injuries.

Front 49

What is Klumpke's palsy?

Back 49

Injury to inferior brachial plexus. Causes ulnar nerve injury. Poor flexion/muscle tone of 4th and 5th digits gives "claw hand" appearance.