Lecture notes
Eczema questions
- Institution
- University Of Portsmouth (UoP)
A list of eczema related questions to help boost your knowledge and prepare you for exams.
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Question 1:What is cutaneous membrane?
The skin
Question 2:
What are the two main parts of the skin?
The epidermis and the dermis
Question 3:
A layer of what is found underneath the dermis?
A layer of fatty adipose tissue
Question 4:
The epidermis has no blood vessels, so how does it get oxygen and nutrients?
It relies on the diffusion of oxygen and nutrients from the blood vessels in the dermis
Question 5:
How does the skin have its elasticity?
It is because of the two proteins, collagen and elastin, found in the connective tissue of the
dermis
Question 6:
The epidermis contains four different types of cells. What are they?
- Keratinocytes
- Melanocytes
- Langerhans cells
- Merkel cells
Question 7:
Out of the 4 different types of cells found in the epidermis. Which is found there in great
numbers (90%) and arranged in layers?
Keratinocytes
Question 8:
What protein does a keratinocyte produce?
Keratin and lamellar granules
Question 9:
What does keratin help protect the skin against?
Heat, microbes and chemicals
Question 10:
What is the role of lamellar granules?
They decrease water loss and keep water out when swimming and inhibit the entry of
foreign material
, Question 11:
Give an example of a water repellent lipid that lamellar granules produce
Ceramide
Question 12:
What does melanin do?
It absorbs damaging UV radiation
Question 13:
What is the role of Langerhans cells?
They are antigen presenting cells of the skin
Question 14:
What do the merkel cells do?
They contact sensory neurones and detect touch
Question 15:
Inside the epidermis, in how many different layers are the keratinocytes arranged in and
what are they, from the deepest layer to the outer layer?
4
- Stratum basale
- Stratum spinosum
- Stratum granulosum
- Stratum corneum
Question 16:
How many more layers do areas of the body with thick skin such as the pals, fingertips and
soles have compared to the normal thin skin and what is it called?
1 more. 5 in total. It’s called the stratum lucidum
Question 17:
In which of the 4 layers are merkel cells and melanocytes found?
Stratum basale
Question 18:
Which of the 4 layers has spiny orjections of filaments which tightly joins the cells together?
The stratum spinosum
Question 19:
In which layer are keratinocytes and lamellar granules found?
In the stratum granulosum
Question 20:
In which layer are Langerhans cells found?
In the stratum spinosum
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