Skin - Layers Of the Epidermis

Question 1

What is the mnemonic for remembering the layers of the skin?

Answer 1

Cover or
Let's
Get
Sun 
Burned

5 Stratum Basale/stratum germinativum

4. Stratum Spinosum
5. Stratum Granulosum
6. Stratum lucidum
7. Stratum Corneum

Question 2

What is the fifth layer of the epidermis?

Answer 2

Stratum basale/stratum germinativum

Question 3

What is the fourth layer of the epidermis?

Answer 3

Stratum spinosum

Question 4

What is the third layer of the epidermis?

Answer 4

Stratum granulosum

Question 5

What is the second layer of the epidermis?

Answer 5

Stratum lucidum

Question 6

What is the first layer of the epidermis?

Answer 6

Stratum Corneum

Question 7

Write a note on the stratum basale/stratum germinativum

6

Answer 7

The deepest layer

Has stem cells that continually divide

Some cells move to the surface - squamous cells

Others give rise to sweat or oil glands

In hairless skin this layer contains tactile discs that are touch receptors (Merkel Discs)

Melanocytes may be found in this stratum also

Question 8

Which is the deepest layer?

Answer 8

Stratum basale/stratum germinativum

Question 9

What type of cells are found in the stratum basale that continuously divide?

Answer 9

Stem cells

Question 10

What type of cells move to the surface in the stratum basale?

Answer 10

Squamous cells

Question 11

What can be found in the stratum basale only in hairless skin?

Answer 11

Tactile discs that are touch receptors (Merkel Discs)

Question 12

What is the name given to the touch receptors in the stratum basale?

Answer 12

Merkel Discs

Question 13

List the types of cells present in the stratum basale.

4

Answer 13

Squamous cells
Stem cells
Epithelial cells which give rise to sweat/oil glands
Melanocytes

Question 14

Write a note on the stratum spinosum.

Answer 14

Has 8-10 rows of polyhedral cells tightly packed

Question 15

What type of cells are found in the stratum spinosum?

Answer 15

Polyhedral cells

Question 16

How many rows of cells are found in the stratum spinosum?

Answer 16

8-10

Question 17

Write a note on the stratum granulosum.

2

Answer 17

Has 3-5 rows of flattened cells with degenerating nuclei

These cells produce keratin

Question 18

How many rows of cells are there in the stratum granulosum?

Answer 18

3-5 rows

Question 19

What type of cells are found in the stratum granulosum

Answer 19

Flattened cells with degenerating nuclei that produce keratin

Question 20

Write a note on the stratum lucidum

2

Answer 20

This is only found in thick skin of the palms and soles

They are flat densely packed cells

Question 21

What type of cells are found in the stratum lucidum?

Answer 21

Flat densely packed cells

Question 22

Write a note on the stratum corneum.

2

Answer 22

Has 15-30 rows of flat, dead cells completely filled with keratin

This layer is continually shed and replaced

Question 23

How many rows are there in the stratum corneum?

Answer 23

15-30

Question 24

What type of cells are present in the stratum corneum?

Answer 24

Flat, dead cells completely filled with keratin

Question 25

What are the cells in the stratum corneum filled with?

Answer 25

Keratin

Question 26

What continually happens to the stratum corneum?

Answer 26

It is continually shed and replaced