Salasche CH3 Skin Tension Lines Flashcards Preview

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Flashcards in Salasche CH3 Skin Tension Lines Deck (26)
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1
Q

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

A

F - lengthening of fibrous septae

2
Q

skin tension lines run parallel to underlying muscles of facial expression

A

F, perpendicular

3
Q

lines deepen with ageing

A

T

4
Q

lines become more pronounced with ageing

A

T

5
Q

process of developing RSTLs is accentuated by solar damage

A

T

6
Q

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

A

F, log axis

7
Q

the scalp is loosely attached to the underlying galea

A

F, firmly attached

8
Q

nose has horizontal lines at root due to procerus muscle contraction

A

T

9
Q

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

A

T

10
Q

STLs of anterior neck are invariably transverse

A

T

11
Q

transverse lines across upper philtrum are due to orbicularis oris

A

F due to depressor sept nasi muscle

12
Q

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

A

F, both

13
Q

collagen is very inflexible

A

F, very flexible

14
Q

collagen resists extensibility or stretch under sudden tension

A

T

15
Q

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

A

T

16
Q

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

A

F, become aligned and straightened

17
Q

elastic fibres are much thicker than collagen

A

F, usually thinner

18
Q

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

A

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

19
Q

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

A

T

20
Q

forehead muscle frontalis acts in a horizontal direction

A

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

21
Q

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

A

F - significant variation

due to action of five groups of muscles

22
Q

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

A

T

23
Q

tip of nose, earlobes and scalp have no STLs

A

T

24
Q

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

A

T

25
Q

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

A

T

26
Q

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)

A

T