MSK/Derm II

Question 1

erb palsy

Answer 1

traction upper brachial

waiters tip

Question 2

klumpke palsy

Answer 2

traction lower brachial

total claw hand

loss intrinsic hand muscles

Question 3

thoracic outlet syndrome

Answer 3

compression lower trunk

and subclavian bessels

Question 4

winged scapula

Answer 4

long thoracic n

axillary node dissection after mastectomy

Question 5

distal lesion of hand

Answer 5

median/ulnar nerve

see clawing of hand

Question 6

deficit proximal hand

Answer 6

seen with flexion

Question 7

lumbricals

Answer 7

flexion MCP and extension DIP and PIP

Question 8

ape hand

Answer 8

unopposable thumb

-median n lesion

Question 9

atrophy thenar eminence

Answer 9

median n

Question 10

atrophy hypothenar eminence

Answer 10

ulnar n

Question 11

ok gesture

Answer 11

prox ulnar n

Question 12

popes blessing

Answer 12

prox median n

Question 13

obturator n

Answer 13

L2-L4

injured pelvic surgery

Question 14

thigh sensation - medial

adduction of leg

Answer 14

obturator n

Question 15

thigh flexion and leg extension

Answer 15

femoral n

Question 16

femoral n

Answer 16

L2-L4

pelvic fx

Question 17

loss of eversion and dorsiflexion of foot

Answer 17

common peroneal n

Question 18

common peroneal n

Answer 18

foot drop

L4-S2

Question 19

tibial n

Answer 19

L4-S3

knee trauma

Question 20

baker cyst

Answer 20

prox tibial lesion

Question 21

dorsal interossei

Answer 21

abduct fingers

Question 22

palmar interossei

Answer 22

adduct fingers

Question 23

lumbricals

Answer 23

flex MCP

extend PIP and DIP

Question 24

landmark for local anesthetic for pudendal block

Answer 24

ischial spine

Question 25

pudendal n

Answer 25

S2-S4

Question 26

sciatic nerve

Answer 26

L4-S3 | posterior thigh innervation

Question 27

superior gluteal n

Answer 27

gluteus medius and minimus

Question 28

inferior gluteal n

Answer 28

gluteus maximus

Question 29

herniation of L3/L4 disc

Answer 29

affect L4 spinal n herniate posterolateral thin posterior long ligament and thick anterior long ligament along midline of vertebral bodies

Question 30

weak knee extension | loss patellar reflex

Answer 30

L3/L4 patella L4

Question 31

weak dorsiflexion and difficulty heel walking

Answer 31

L4/L5

Question 32

weak plantar flexion, difficulty toe walking | loss achilles reflex

Answer 32

S1 is achilles L5-S1

Question 33

surgical neck humerus

Answer 33

axilalry

Question 34

midshaft humerus

Answer 34

radial

Question 35

distal humerus - cubital fossa

Answer 35

median

Question 36

popliteal fossa

Answer 36

tibial

Question 37

posterior to medial malleolus

Answer 37

tibial

Question 38

muscle contraction

Answer 38

depolarization - down T-tubule - DHPR - coupled to ryanodine receptor on SR - release of Ca - from SR Ca bind troponin C -tropomyosin moves out of way on actin myosin release bound ADP and moves to bind actin - power stroke binding new ATP - detach myosin from actin - myosin cocks head for next contraction

Question 39

type I muscle

Answer 39

1 slow fat red ox red - mitochondria and myoglobin ox phos - sustained contraction postural mm

Question 40

type II muscle

Answer 40

fast twich white hypertrophy with weight training

Question 41

cardic m

Answer 41

1 T-tubule and 1 terminal cisternae diad

Question 42

skeletal m

Answer 42

1 T tubule and 2 terminal cisternae triad