Salasche CH3 Skin Tension Lines

Question 1

skin tension lines are caused by factors involving tissue laxity, excessive skin, and shortening of collagenous fibrous septae contacting dermis to underlying muscle

Answer 1

F - lengthening of fibrous septae

Question 2

skin tension lines run parallel to underlying muscles of facial expression

Answer 2

F, perpendicular

Question 3

lines deepen with ageing

Answer 3

T

Question 4

lines become more pronounced with ageing

Answer 4

T

Question 5

process of developing RSTLs is accentuated by solar damage

Answer 5

T

Question 6

if possible, the short axis of an excision should be placed parallel to the STLs

Answer 6

F, log axis

Question 7

the scalp is loosely attached to the underlying galea

Answer 7

F, firmly attached

Question 8

nose has horizontal lines at root due to procerus muscle contraction

Answer 8

T

Question 9

STLs of cheek nicely correlate to the combined contractions of the lip and mouth angle retractors

Answer 9

T

Question 10

STLs of anterior neck are invariably transverse

Answer 10

T

Question 11

transverse lines across upper philtrum are due to orbicularis oris

Answer 11

F due to depressor sept nasi muscle

Question 12

STLs are the result of complex interactions of intrinsic but not extrinsic factors

Answer 12

F, both

Question 13

collagen is very inflexible

Answer 13

F, very flexible

Question 14

collagen resists extensibility or stretch under sudden tension

Answer 14

T

Question 15

when skin is at rest, collagen fibres intertwine in a random fashion

Answer 15

T

Question 16

with tension, increasing numbers of collagen fibres become twisted and unruly

Answer 16

F, become aligned and straightened

Question 17

elastic fibres are much thicker than collagen

Answer 17

F, usually thinner

Question 18

linear wrinkles appear due to multiple attachments of fibres of the SMAS into the dermis

Answer 18

T. where fibrous attachments do not exist, such as jowls, baggy areas develop

Question 19

where multiple muscle act in different directions, there is greater variation between individuals

Answer 19

T

Question 20

forehead muscle frontalis acts in a horizontal direction

Answer 20

F, vertical direction which is why skin tension lines are horizontal

Question 21

around mouth, there is little variation in the direction of STLs

Answer 21

F - significant variation

due to action of five groups of muscles

Question 22

there are no muscles of facial expression over the temple and lateral zygomatic arch

Answer 22

T

Question 23

tip of nose, earlobes and scalp have no STLs

Answer 23

T

Question 24

INFRAORAL CREASE
- curved diagonal line extending from a point just lateral to the oral commissure to the labial-mental crease appearing to be a continuation of the nasolabial fold to the chin

Answer 24

T

Question 25

pinching skin between the thumb and the forefinger will often demonstrate fine parallel wrinkle lines in the direction of the STL

Answer 25

T

Question 26

technique of removing circular defect then waiting 3-5 min to see direction of STL forming oval is quite reliable (as long as patient is in a resting position)

Answer 26

T