Integumentary System

Question 1

Name the four exocrine glands found in the skin.

Answer 1

sebaceous glands, eccrine sudoriferous glands, apocrine sudoriferous glands and ceruminous glands

Question 2

What secretion do sebaceous glands produce?

Answer 2

Sebum (oil)

Question 3

What secretion do ceruminous glands produce?

Answer 3

cerumen (wax)

Question 4

What secretion do eccrine sudoriferous glands produce?

Answer 4

sweat (clear)

Question 5

What secretion do apocrine sudoriferous glands produce?

Answer 5

sweat (milky)

Question 6

Name a function of ceruminous glands.

Answer 6

impede entrance of foreign bodies, prevent microbe entering cells

Question 7

Name a function of eccrine sudoriferous glands.

Answer 7

temperature regulation and waste removal

Question 8

Name a function of sebaceous glands.

Answer 8

keeps skin soft and pliable

Question 9

Define keratinisation.

Answer 9

the replacement of keratinocyte with the protein keratin as they move from one epidermal layer to the next.

Question 10

List the four layers in thin skin that are involved in keratinisation.

Answer 10

stratum basale, stratum spinosum, stratum granulosum and stratum corneum

Question 11

Describe the structure of keratinocytes in stratum corneum.

Answer 11

25-30 layers of flattened, thin and overlapping dead keratinocytes

Question 12

Describe the structure of keratinocytes in stratum granulosum.

Answer 12

3-5 layers of flattened keratinocytes which are undergoing apoptosis

Question 13

Describe the structure of keratinocytes in stratum spinosum.

Answer 13

8-10 layers of thorn like covered keratinocytes

Question 14

Describe the structure of keratinocytes in stratum basale.

Answer 14

single row of cuboidal or columnar keratinocytes

Question 15

In which layers does deep wound healing occur.

Answer 15

dermis and subcutaneous layers

Question 16

List the four phases of deep wound healing.

Answer 16

Inflammatory, migratory, proliferative and maturation phases

Question 17

Describe one event that occurs during the inflammatory phase.

Answer 17

blood clot forms. closing wound

Question 18

Describe one event that occurs during the migratory phase.

Answer 18

regrowth of epithelial cells, clot becomes a scab

Question 19

Describe one event that occurs during the proliferative phase.

Answer 19

events of migratory phase intensifies, scar tissue forms

Question 20

Describe one event that occurs during the maturation phase.

Answer 20

scab sloughs off, epidermis restored to normal thickness