DIR Text

Question 1

Sensory innervation of face

Question 2

What are the layers of the scalp?

Answer 2

Question 3

What is the “forgotten” branch of CN VII?

Answer 3

Question 4

Question 5

Question 6

Question 7

Where is the spinal accessory nerve (CN XI) located in relation to Erb’s point?

Answer 7

Question 8

Question 9

Question 10

What is the eponychium?

Answer 10

Cuticle

Question 11

Question 12

Esters may cross-react with what?

Answer 12

STPP

Sulfa, thiazides, para-aminobenzoic acid, and para-phenylenediamine

Question 13

Question 14

On administration of anesthesia, loss of sensation or function occurs in what order?

Answer 14

Question 15

Type ____ collagen is the first collagen to be synthesized in a wound.

Answer 15

Type III collagen

THEN type I collagen

Question 16

Contraction of wound mediated by myofibroblasts is greatest from _____ to _____ days.

Answer 16

5-15 days

Question 17

Name the flap

What kind of flap is this?

Answer 17

Rieger flap

Also known as dorsal nasal rotation flap

Random pattern, rotation flap

Question 18

How much of an increase in total scar length occurs in a 60-degree Z-plasty?

Answer 18

Question 19

Name the flap

Answer 19

Melolabial interpolation flap

Take down occurs at 3 weeks

Random-patterned flap with blood supply from perforators of the angular artery

Question 20

Name the flap

Answer 20

Question 21

Name the flap

Answer 21

Mastoid or retroauricular interpolation flap

Question 22

Why should hypergranulation tissue be removed?

Answer 22

If left in place, this tissue will serve as a physical barrier to epidermal migration. It may be removed mechanically with a curette and chemically with agents such as silver nitrate and trichloroacetic acid

Question 23

What are strategies for avoiding trap door deformity?

Answer 23

Hypothesized to be caused by insufficient undermining

Best prevention is at time of repair

Widely undermine

Placement of basting sutures

Squaring of corners

May be treated with ILK

Question 24

Wound contraction is maximal approximately _____ after reepithelialization has occurred. Scar relaxation occurs _____ postoperatively and will lessen the final degree of contracture.

Answer 24

Wound contraction is maximal approximately 2 months after reepithelialization has occurred. Scar relaxation occurs 3 months to 1 year postoperatively and will lessen the final degree of contracture.

Question 25

What are the histologic findings of electrodessication and electrofulguration?

Answer 25

Tissue desiccation: **Cell outlines preserved but shrunken**. Nuclei elongated. Some vessel thrombosis

Question 26

What are the histologic findings of electrocoagulation?

Answer 26

Tissue coagulation: **Cell outlines lost from massive protein denaturation**. Homogeneous hyalinized appearance. Vessel thrombosis

Question 27

What are the histologic findings of electrosection?

Answer 27

**Cell disintegration forming approximately 0.1-mm incision**; minimal coagulation effect

Question 28

What are the histologic fingings of electrocautery?

Answer 28

Amorphous tissue with charred foci and formation of steam spaces

Question 29

What is the boiling point of CO2 gas?

Answer 29

-78 degrees Celsius

Question 30

Peak plasma lidocaine levels are reached how many hours after tumescent anesthesia?

Answer 30

12 hours

Question 31

Answer 31

Question 32

In PDT, what is the porphyrin responsible for treatment response?

Answer 32

Protoporphyrin IX Photosensitizer metabolized in the skin to photoactive protoporphyrin IX

Question 33

Is salicylic acid an alpha- or beta-hydroxy acid?

Answer 33

Beta-hydroxy acid Self-neutralizing Oil soluble

Question 34

Name the alpha hydroxy acids?

Answer 34

Three categories: Monocarboxylic (glycolic, lactic,mandelic), dicarboxylic (malic, tartaric), tricarboxylic (citric) Water-soluble

Question 35

True or false: SPF does not measure UVA protection

Answer 35

True SPF is only a measure of UVB

Question 36

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Question 39

Answer 39