Hair Transplantation

Question 1

Embryologic origin of hair

Answer 1

Ectodermal and Mesodermal

Question 2

Ectodermal derivative of hair

Answer 2

Hair and pilosebaceous follicle

Question 3

Mesodermal derivative of hair

Answer 3

Dermal papilla

Question 4

Visible portion of the hair above scalp surface

Answer 4

Shaft of hair

Question 5

Diameter of shaft of hair

Answer 5

60-100 micrometers

Question 6

Layers of the shaft of hair

Answer 6

Cuticle, Cortex and Medulla

Question 7

Portion of hair beneath the scalp surface

Answer 7

Root of the hair

Question 8

Follicle of hair is also known as?

Answer 8

Root or Bulb

Question 9

Angle where the root/bulb sits in the scalp

Answer 9

Oblique angle

Question 10

Hair shaft is composed of?

Answer 10

Keratin

Question 11

Keratin, is a fibrous protein that is composed by?

Answer 11

Hair follicle

Question 12

Critical landmark in the mature male hairline

Answer 12

Frontotemporal recession

Question 13

Frontotemporal recession is formed by?

Answer 13

Emergence of two convex lines making up the frontal and temporal hairlines.

Question 14

Important characteristic in mature males

Answer 14

Frontotemporal recession

Question 15

Frontotemporal recession is not present in ?

Answer 15

Young males, children and women

Question 16

Important characteristic in children and women

Answer 16

Continuous line between frontal and temporal areas without recession

Question 17

Hair follicles sit at a depth of________ below the surface of the scalp

Answer 17

3 - 3.5 mm

Question 18

Scalp thickness varies from ______________

Answer 18

5.5 to 6.5 mm

Question 19

Vellus hair characteristics

Answer 19

Soft, Short, lightly pigmented or hypopigmented hair, can be almost invisible.