MSK/SKIN/CT Final Details

Question 1

Layers of the epidermis

Answer 1

Corneum

Lucidum

Granulosum

Spinosum

Basal

Californians like girls in string bikinis

Question 2

Cell-to-cell junctions that rely upon Ca2+

Answer 2

Cadhereins

(Calcium adereins)

Loss of which promotes metastasis (invasive ductal carcinoma is common example)

Question 3

Carpal bones

Most commonly fractured?

Most commonly dislocated?

Answer 3

So Long To Pinky, Here Comes The Thumb

Scaphoid, lunate, triquetrium, pisiform, hammate, capitate, trapezoid, trapezium

Most commonly fractured: scaphoid

Most commonly dislocated: lunate

Question 4

Function of the musculocutaneous nerve

Answer 4

flexion at the elbow

Question 5

fracture of the surgucal neck of the humerous will damage what nerve and artery

Answer 5

Axillary nerve and posteriorcircumflex humeral artery

Question 6

compression of the radial artery by a crust will cause what symptoms?

Answer 6

Wrist drop

Question 7

Compression of the median nerve results in what musclular defect?

Answer 7

Dysfunction in wrist flexors and thumb opposition (hand of benediction)

Question 8

Raidal nerve innervates what four sets of muscles?

Answer 8

Brachioradialis

Extensors of the wrist

Supinator

Triceps

Question 9

cervical rib compression of lower brachial plexus can result in what presentation?

Answer 9

C8-T1 compression causing klumpke palsy with a reduced distal pulse

Question 10

cause of ulnar claw?

Answer 10

Inability to extend 4th and 5th digits at the DIP and PIP

Lumbrical parlysis

Question 11

Knee trauma like a PCL tear can cause damage to what structure?

Answer 11

Tibial Artery which is fixed on either side of the popliteal fossa

Question 12

Soap bubble appearence of bone with multinucleated giant cells?

Answer 12

Giant cell tumor

Osteoclastoma (because osteoclasts are multinucleatd giant cells)

Question 13

Periosteal elevation on the distal femur

Answer 13

Osteosarcoma

Question 14

Onion skin appearnce in the bone is associated with what translocation

Answer 14

t(11;22)

Ewing sarcoma

Tx with dactinomycin

Question 15

Malignant, shiny, cartilagenous tumor

Answer 15

Chondrosarcoma

Question 16

Can’t see, can’t spit, can’t climb shit

Answer 16

Sjogrens

Anti-Ro and Anti-La (SS-A and SS-B)

Question 17

What kind of crystals in pseudogout?

Answer 17

Calcium pyrophosphate

Rhomboid and + birefringence

Question 18

Elevated ACE with bilateral hilar lymphadenopathy

Answer 18

Sarcoidosis

Question 19

temoral arteritis with joint pain and stiffness in the shoulders and hips

Answer 19

Polymyalgia rhematica

Tx: low dose corticosteroids

Question 20

Discrete tenderpoints in a yound woman with widespread MSK pain?

Answer 20

Fibromyalgia

Question 21

progressive symmetric proximal muscle weakness characterized by endomesial inflammation with CD8+ t cells

Answer 21

Polymyositis

Question 22

Polymyositis with a malar rash and grottens papules on knuckles

Answer 22

Dermatomyositis

Question 23

Ab present in both dermato- and polymyositis

Answer 23

Anti-jo-1

Question 24

deposits of IgA at the tips of dermal papilla

Answer 24

Dermatitis herpetiformis–> Celiac Dz

Question 25

Inital patch followed by a rash that follows eipdermal lines

Answer 25

Pityriasis rosea

Question 26

Yellow crusting skin ifection caused by what bug

Answer 26

S. aureus and S. pyogenese

Question 27

Yellow crusting with blisters

Answer 27

Bullous impetigo caused by S. aureus

Question 28

Leukotriene which is a strong chemotacitc agent

Answer 28

LTB4