SKIN

Question 1

Layers of the skin

Answer 1

-Subcutaneous layer (technically not part of skin) -Dermis -Epidermis

Question 2

Phases of deep wound healing

Answer 2

• Inflammatory phase - Migratory phase - Proliferative phase - Maturation phase

Question 3

Functions of the skin

Answer 3

• Thermoregulation • Blood reservoir • Protection • Sensations • Excretion and absorption • Synthesis of Vitamin D

Question 4

2 regions of the Dermis

Answer 4

• PAPILARY LAYER (Superficial portion) • RETICULAR LAYER ( Deeper portion)

Question 5

Cells of the epidermis

Answer 5

• keratinocytes
• merkel cells
• melanocytes
• langerhans cells

Question 6

Layers of the epidermis

Answer 6

• Stratum Corneum
• Stratum Lucidum
• Stratum Granusosum
• Stratum Spinosum
• Stratum Basal

Question 8

Keratinocytes

Answer 8

Produce protine “keratin”- a fibrous protein that protects the skin and underlying tissue from abrasions, heat, microbes and chemicals.

Question 9

Melanocytes

Answer 9

Produces pigment “melanin”. Contributes to skin colour and absorbes damaging ulta violet rays.

Question 10

Langerhans cells

Answer 10

Arises from red bone marrow and migrates to epidermis. Participates in immune responces. Helps other cells of immune system to recognise invading microbes and destory them.

Question 11

Merkel cells

Answer 11

Located in deepest layer of epidermis.

Detects touch and sensations.