Histology of Skin Flashcards Preview

Molecules to Man > Histology of Skin > Flashcards

Flashcards in Histology of Skin Deck (16):
1

What is the function of skin

Protection
Sensory
Thermoregulation - Fatty layer, sweat glands
Metabolic - synthesise vitamin D
Containment - prevent dehydration
Sexual signalling

2

What are the layers of skin from deep to superficial

Stratum Spinosium
Stratum Granulosum
Stratum Licidem
Stratum Corneum

3

What does spinosiujm do

Prickle cell layer
Euchromatic Nucleus
Produce spiky desmosomal junctions

4

What does granulosum do

Produce lipid rich layer to prevent water loss + barrier against foreign material

5

In which type of skin is lucidem visible

Only visible in thick skin

6

What is corneum made of

Dead keratinized cells

7

What does the subcutaneous tissue have

Vascular system + adipose tissue

8

What is the difference between thick and thin skin

Thin skin is hairy

9

What is the function of melanocytes

Produce melanin which protects skin against UV radiation

10

What is the function of dendritic langerhams cells

Triggers immune response with microorganisms

11

What is the function of tactile merkel cells

Mechanoreceptors

12

What is the function of the Sebaceous Gland

Secrete sebum which keeps skin supple

13

What are the 2 types of sweat glands

Eccrine = sweat
Apocrine = pheromones

14

What is hair made of

Elongated keratinized controlled by arrector pili muscle

15

What are nails made of

Hard and flexible plates of keratin
Nail plate arise from nail matrix

16

What are the different type of receptors and their function

Free nerve ending = temp, pain, itching
Root hair plexus = hair movement
Tactile Corpuscles = light touch
Lamellated Corpuscle = coarse touch, pressure, vibrations