Integumentary System — Lecture

Question 1

[5] Function of Skin

Answer 1

1. Protection
2. Sensory
3. Excretion
4. Vitamin D production
5. Body temperature homeostasis

Question 2

Prevent harmful substances from entering into the body.

[functions of skin]

Answer 2

Protection

Question 3

Huge sense organs (receptive to touch, pain,
pressure and temperature).

[functions of skin]

Answer 3

Sensory

Question 4

waste materials.

[functions of skin]

Answer 4

Excretion

Question 5

Needed to absorb calcium Immunity.

[functions of skin]

Answer 5

Vitamin D production

Question 6

human defense.

[functions of skin]

Answer 6

Body temperature homeostasis

Question 7

[2] Layers of Skin

Answer 7

1. Epidermis
2. Dermis

Question 8

superficial layer; epithelial coat.

[epi/dermis]

Answer 8

Epidermis

Question 9

made up of connective tissue (innermost
layer).

[epi/dermis]

Answer 9

Dermis

Question 10

[2] Epidermis Cell types

Answer 10

1. Keratinocytes
2. Melanocytes

Question 11

produce keratin – waterproofing protein.

[epidermis cell types]

Answer 11

Keratinocytes

Question 12

Originate in deeper layers & get pushed to surface – becomes keratin filled & dies.

[epidermis cell types]

Answer 12

Keratinocytes

Question 13

Produce melanin which accumulates on superficial side of nucleus.

[epidermis cell types]

Answer 13

Melanocytes

Question 14

Prevents DNA mutation from the UV radiation.

[epidermis cell types]

Answer 14

Melanocytes

Question 15

Membrane bound granules where melanin is produced.

Answer 15

Melanosomes

Question 16

[3] types of Pigments present in Epidermis (Skin Color]

Answer 16

1. Melanin
2. Carotene
3. Hemoglobin

Question 17

brown, black pigment.

[epidermis skin color]

Answer 17

Melanin

Question 18

Orange-yellow pigment from some vegetables.

[epidermis skin color]

Answer 18

Carotene

Question 19

Red, oxygen-carrying pigment in erythrocytes.

[epidermis skin color]

Answer 19

Hemoglobin

Question 20

Highly mitotic (produces new skin layer).

Answer 20

Stratum basale

Question 21

Slightly mitotic.

Answer 21

Stratum spinosum

Question 22

Contains Langerhans’s macrophages.

Answer 22

Stratum spinosum

Question 23

Only found in thicker epidermis – palms, soles, callus.

Answer 23

Stratum lucidum

Question 24

Outermost layer.

Answer 24

Stratum corneum

Question 25

[2] Layers of Dermis

Answer 25

1. Papillary
2. Reticular

Question 26

Dense irregular CT and Contains blood vessels,
nerves, glands, adipose.

[dermis layer]

Answer 26

Reticular layer

Question 27

Contains Areolar loose CT; outer layer and most superficial.

[dermis layer]

Answer 27

Papillary layer

Question 28

[3] contributes to skin pigmentation.

Answer 28

1. Melanin
2. Carotene
3. Hemoglobin