Lecture 18: Burns

Question 1

What can cause burns?

Answer 1

A burn is an injury to tissues caused by

heat, electricity,chemicals, light, radiation or friction

Question 2

What are some of the functions of skin?

Answer 2

• Protection
• Excretion (Of some waste products)
• Thermoregulation
• Synthesis of vit D
• Sensation/ sensory reception
• Blood reservoir: an organ or region containing a significant portion of the blood volume

Question 3

What is the order of the epidermis? Include the thick skin layer

Answer 3

Stratum corneum
Stratum lucidum (Thick skin)
Stratum granulosum
Stratum spinosum
Stratum basale

Question 4

What are the four kinds of cells within the epidermis?

Answer 4

keratinocytes, melanocytes, Merkel cells and Langerhan’s or dendritic cells &

Question 5

Where are Keratinocytes located and what are their function

Answer 5

ALL strata (basale, spinosum, granulosum, lucidum (if present) & corneum)

Toughen, waterproof and protect skin

Question 6

Where are Melanocytes located and what are their function

Answer 6

Stratum basale

Produce melanin pigment for UV protection

Question 7

Where are Langerhan’s/dendritic cells located and what are their function

Answer 7

Stratum spinosum

Immune protection

Question 8

Where are Merkel cells cells located and what are their function

Answer 8

Stratum basale

Detection of light touch sensations

Question 9

What is the two layers the dermis is divided into?

Answer 9

papillary layer & reticular layer

Question 10

What is the dermis papillary layer: superficial layer composed of areolar connective tissue
- reticular layer