The Skin

Question 1

What does the integumentary system mean

Answer 1

Skin and its associated structures

Question 2

Functions of the skin

Answer 2

Protection
Temp regulation
Sensation
Metabolism
Waste disposal

Question 3

Normal body temp

Answer 3

36.5-37.5

Question 4

What is the blood reservoir

Answer 4

Extensive blood supply

Question 5

During excretion what are nitrogen containing waste

Answer 5

Ammonia
Urea
Uric acid
* water and salts

Question 6

Layers of the skin

Answer 6

Epidermis
Dermis
Hypodermis

Question 7

5 layers in epidermis

Answer 7

Stratum corners
Stratum lucidum
Stratum granulosum
Stratum spinosum
Stratum basale

Question 8

Cells of epidermis

Answer 8

Keratinocyctes
Melanocytes
Langerhans cells
Merkel cells

Question 9

Function of keratinocytes

Answer 9

Produces kertain

Question 10

Function of melanocytes

Answer 10

Produces melanin
Located in basal cells

Question 11

Langerhans cells

Answer 11

Bone marrow deprived cells
Form of macrophages

Question 12

Merkel cells

Answer 12

At the epidermal/dermal junction
Each cell is associated with a disc like sensory nerve ending

Question 13

Merkel disc consists of

Answer 13

Combination of cell and nerve forms the light touch receptor called Merkel disc

Question 14

Stratum basale

Answer 14

Single cell layer
High mitosis activity
Produces keratinocytes
Have melanocytes, occasional Merkel cells

Question 15

Stratum spinosum

Answer 15

Several layers of
Fill with intermediate filaments (in form of pre keratin)

Question 16

Stratum granulosum

Answer 16

3-5 layers
Keratinocytes are flatter