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MSK test 2 > lec 9 > Flashcards

lec 9 Flashcards

1
Q

supraclavicular branches of brachial plexus

A

long thoracic nerve
suprascapular nerve
dorsal scapular nerve
–>superior to clavicle
–> innovator shoulder and scapula

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2
Q

infraclavicular branches of brachial plexus

A

inferior to clavicle
in axilla/armpit

musculocutaneous
radial
axillary
median
ulnar

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3
Q

what are the cords in my pneumonic and the nerves that go with and the level of spinal cord

A

LPM

LATERAL
musculocutanoues (C5,6,7)

POSTERIOR
axillary (C5, C6)
radial (C5-T1)

MEDIAL
ulnar (C8, T1)

LATERAL AND MEDIAL
median (C5-T1)

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4
Q

musculocutanoues nerve

cord origin, spine #s

motor functions

sensory functions

injury site

A

lateral cord; c567

motor: anterior arm (coracobrachialis, biceps, brachialis)

sensory: skin of anterolateral forearm

I: coracobrachilais

–> continues after passing cubital fossa as lateral cutaneous nerve of forearm

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5
Q

axillary nerve

cord origin, spine #s

motor functions

sensory functions

injury site

A

c5,6; posterior cord

m: lateral shoulder; deltoid and tires minor

sensory: skin of lateral shoulder

-travels through quadrangular axillary space, wrap around humerus neck

injure at surgical neck of humerus
-atrophy of deltoid

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6
Q

radial nerve

cord origin, spine #s

motor functions

sensory functions

injury site

A

posterior cord; c5-t1

m: extensors/ posterior of arm and forearm, brachioradialis, supinator

s: skin of posterior arm, forearm, hand (dorsal lateral 3.5 digits)

-radial groove of humerus injury
-radial nerve palsy; wrist drop

-deep branch is motor
-superficial branch is sensory

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7
Q

median nerve

cord origin, spine #s

motor functions

sensory functions

injury site

A

lateral and medial cords
c5-t1

m: anterior forearm and hand (flexors of wrist and digits 1,2,3), lumbricals 1,2, thenar muscles, pronators of forearm

s: palmar lateral 3.5 digits

-cross elbow at cubital fossa - injure hear

enter hand at carpal tunnel- injure here

carpal tunnel syndrome
-ape hand deformity

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8
Q

ulnar nerve

cord origin, spine #s

motor functions

sensory functions

injury site

A

medial cord, c8,t1

m: medial forearm and hand
-hand intrinsics (lumbricals 3,4 , hypothernar, palmar and dorsal interosssei)

-s: medial 1.5 digits ((palmar and dorsal surfaces)

-passes posterior to medial epicondyle- injure at funny bone
-ulnar claw hand

-passes hand external to carpal tunnel

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9
Q

sensory innervation of

musculocutanoeus

axillary

radial

median

ulnar

A

musculocutanoeus: skin of anterolateral forearm

axillary : skin of lateral shoulder

radial: skin of posterior arm, forearm, hand (dorsal lateral 3.5 digits)

median palmar lateral 3.5 digits

ulnar medial 1.5 digits

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10
Q

hand sensory innervation of nerves

A

radial nerve: dorsal lateral 3.5 digits

median nerve: palmar lateral 3.5 digits

ulnar nerve: medial 1.5 digits (dorsal and palmar surfaces)

ulnar= both sides of pinky 1.5
radial= dorsal 3.5 “RAD NAILS”

median= palmar 3.5 MEATY PALMS

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11
Q

vental/anterior root

posterior/dorsal root

A

vental/anterior root: motor; efferent OUT OF CNS

(got to vent and get it out)

posterior/dorsal root: sensory; afferent INTO CNS

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12
Q

myotome of c5-t1

A

c5 deltoid
c6 biceps
c7 triceps
c8 finger flexion
t1 finger abduction

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13
Q

dermatomes of c5-t1

A

c5 skin of anterior/lateral arm (deltoid)
c6 anterior skin of thumb
c7 anterior skin of digits 2 and 3
c8 skin of digits 4 and 5
t1 skin of antero/medial elbow

* start at lateral arm and make way down to thumb and back around*

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14
Q

deep tendon reflexes

A

c5 biceps
c6 brachioradialis
c7 triceps

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15
Q

dermatomes and myotomes of c5-t1

A

myotomes:
c5 deltoid
c6 biceps
c7 triceps
c8 finger flexion
t1 finger abduction

dermatomes:
c5 skin of anterior/lateral arm (deltoid)
c6 anterior skin of thumb
c7 anterior skin of digits 2 and 3
c8 skin of digits 4 and 5
t1 skin of antero/medial elbow

* start at lateral arm and make way down to thumb and back around*

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16
Q

which nerve enters have via carpal tunnel and which doesnt

A

median through carpal

ulnar externally

17
Q

artery path

A

subclavian artery to axillary to brachial to ulnar and radial arteries

18
Q

subclavian artery

A

supra scapular artery

19
Q

axillary artery

A

3 branches
1. superior thoracic artery
2. thoracic acromial artery
2. lateral thoracic artery
3. sub scapular artyer
3. anterior circumflex humeral artery
3. posterior circumflex humeral artery

between 1st rib and lower border of teres major and pac major

1st part is for thoracic cavity

2nd part covered by muscles to supply lateral thoracic wall and serrates anterior

3rd part for scapular region- attach to proximal end of humerus

once pass inferior border of teres major or pec change name to brachial artery

20
Q

brachial artery

A

start at lower border of teres major or pec major

  1. deep brachial (profound brachii) artery; move posterior to radial groove
    -accompannies radial nerve
    -supply posterior arm
  2. muscular branches for anterior arm

-passes between ulnar and median nerve in arm
-goes under cubital fossa

21
Q

which arteries are accompanies by a nerve

A

brachial artery- radial nerve

ulnar artery- ulnar nerve

22
Q

arteries of the forearm ulnar and radial

A

-brachial artery divides into 2 at cubital fossa

ulnar artery: lies under flexor carpi ulnas, accompanied by ulnar nerve
-posterior compartment and wrist
-forms palmar arterial arches

radial artery; supplies lateral forearm
-covered by brachioradialis
-passes through anatomical snuff box forms deep palmar arch

23
Q

hand arteries

A

radial artery supplies dorsal hand

radial and ulnar form superficial and deep palmar arterial arch

radial does lateral 1.5 side, ulnar does medial 3.5 side

24
Q

veins

A

dorsal venous network in hand

cephalic vein or radial thumb side

basilic vein on ulnar medial side

median cubital vein at elbow

brachial vein
axillary vein
brachiocephalic veins
subclavian veins
internal and external jugular veins
superior vena cava

25
Q

which side is basilica and cephalic vein on in forearm

A

cephalic vein or radial thumb side

basilic vein on ulnar medial side

26
Q

arm transition areas

A

axilla
cubital fossa
carpal tunnel

27
Q

borders of cubital fossa *muscles

A

medial border: pronator muscle

lateral border: brachioradialis

28
Q

axilla borders

A

anterior wall; pectoral

posterior wall; scapula

medial walll; 4 upper ribs and serrates anterior

lateral wall; humerus

29
Q

contents of axilla

A

axillary artery
axillary vein
infraclavicular part of brachial plexus
axillary lymph nodes

MSK test 2 (6 decks)

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