Skin/Integumentary System

Question 1

Overall functions of the integumentary system.

Answer 1

1. Protection
2. Thermoregulation
3. Sensation
4. Excretion
5. Immune defense
6. Synthesis of vitamin D
7. Blood reservoir
8. metabolic functions
9. Aesthetic and social functions.
10. Communication

Question 2

What kind of Epithelial tissue are the epidermis composed of?

Answer 2

Keratinized stratified squamous epithelium

Question 3

What kind of connective tissue are the Dermis composed of?

Answer 3

Dense irregular connective tissues

Question 4

What are the 4 principal cells of the skin

Answer 4

1. Keratinocytes
2. Melanocytes
3. Langerhans cells
4. Tactile disc

Question 5

What’s the percentage of keratinocytes of the epidermal cells?

Answer 5

85%

Question 6

What’s the percentage of melanocytes of the epidermal cells?

Answer 6

8%

Question 7

What’s the percentage of langerhans cells of the epidermal cells?

Answer 7

5%

Question 8

What’s the percentage of Tactile disc of the epidermal cells?

Answer 8

2%

Question 9

The fibrous protein that provides structural strength to skin, hair and nails that is produced by keratinocytes?

Answer 9

Keratin

Question 10

What determines skin, hair and eye colours produced by melanocytes?

Answer 10

Melanin

Question 11

Which epidermal skin cells is involved in immune responses?

Answer 11

Langerhans cells/intra epidermal macrophages.

Question 12

Which epidermal skin cell function as touch receptors?

Answer 12

Tactile disc

Question 13

What are the Epidermal strata?

Answer 13

1. Stratum basale
2. Stratum spinosum
3. Stratum granulosum
4. Stratum Lucidum
5. Stratum corneum.

Question 14

Which is the deepest layer of the skin cell?

Answer 14

Stratum Basale

Question 15

Which skin cells is present in thick skin (palms and soles)

Answer 15

Stratum Lucidum

Question 16

Which is the most superficial/ outermost layer?

Answer 16

Stratum corneum

Question 17

Which region is the uppermost layer of the Dermis?

Answer 17

Papillary region

Question 18

The papillary region consist of what connective tissue?

Answer 18

Loose Areolar connective tissue

Question 19

What is the region that has the deeper and thicker layer of the Dermis?

Answer 19

Reticular region.

Question 20

The reticular region consist of which Connective Tissue?

Answer 20

Dense irregular connective tissues

Question 21

Skin colour is determined by 3 pigments namely?

Answer 21

1. Melanin
2. Carotene
3. Hemoglobin

Question 22

Functions of the Hair

Answer 22

Protection
Sensation
Thermoregulation

Question 23

Function of the nail?

Answer 23

Protection
Sensation
Grip

Question 24

Each nail consist of?

Answer 24

Free edge
Lunula
Nail body
Nail root
Nail bed
Nail matrix
Eponychium(cuticle)

Question 25

What kind of tissue are the epidermis composed of?

Answer 25

Epithelial tissue

Question 26

What kind of tissue are the Dermis composed of?

Answer 26

Connective tissue

Question 27

Dead, scaly, interlocking keratinized cells are called?

Answer 27

Corneocytes

Question 28

Thick skin has hair follicles or sebaceous glands?
True or False?

Answer 28

False

Question 29

All people have about same number of melanocytes.
True or False

Answer 29

True