Exercise 5: Integumentary System (Lab)

Question 1

Composed of epithelial tissue

Answer 1

Outer epidermis

Question 2

Connective tissue that is firmly attached to the epidermis by a basement membrane

Answer 2

Deep dermis

Question 3

Another layer found immediately beneath the skin but it is not a part of the skin

Answer 3

Hypodermis

Question 4

Also refereed as subcutaneous or Sub-Q

Answer 4

Hypodermis

Question 5

Stratas of the epidermis

Answer 5

Corneum
Lucidum
Granulosum
Spinosum
Basale

Question 6

Outermost layer of the skin

Answer 6

Stratum corneum

Question 7

Consists of 25 to 30 or more layers of dead squamous cells

Answer 7

Stratum corneum

Question 8

Layers of dead squamous cells

Answer 8

Keratinocytes

Question 9

Waterproof, tough, and continuously undergoes sloughing off

Answer 9

Stratum corneum

Question 10

Contains three to five rows of dead, flat keratinocytes, dying keratinocytes

Answer 10

Stratum granulosum

Question 11

No dividing cells found in this layer

Answer 11

Stratum granulosum

Question 12

Composed of eight to 10 rows of cells which are mainly keratinocytes

Answer 12

Stratum spinosum

Question 13

Often seen with thorn-like projections caused by the process of tissue preparation in stained slides

Answer 13

Stratum spinosum

Question 14

Deepest layer of the epidermis

Answer 14

Stratum basale / stratum germinativum

Question 15

Made up of a single row of cells attached to the basement membrane

Answer 15

Stratum basale

Question 16

Cells actively undergo Mitotic division to form new keratinocytes

Answer 16

Stratum basale

Question 17

Made up of the papillary and reticular layers

Answer 17

Dermis

Question 18

Composed of areoles connective tissue

Answer 18

Dermis

Question 19

Finger-like projections in the papillary layer that extend to the epidermis

Answer 19

Dermal papillae

Question 20

Deeper and much thicker region of the dermis

Answer 20

Reticular layer

Question 21

Composed of dense irregular connective tissue

Answer 21

Reticular layer

Question 22

Provide the skin with strength and elasticity respectively

Answer 22

Collagen fibers and elastic fibers

Question 23

Accessory structures associated with the skin

Answer 23

Hair, nails, and skin glands

Question 24

Superficial portion of the hair

Answer 24

Shaft

Question 25

Projects from the surface of the skin

Answer 25

Hair shaft

Question 26

Found deep into the shaft and penetrates the dermis and sometimes the hypodermis

Answer 26

Hair root

Question 27

Three layers of the hair and the hair root

Answer 27

Inner medulla Middle cortex Outer cuticle

Question 28

Composed of keratinized, tightly packed epidermal cells that cover the dorsal surface of the distal portion of each digit

Answer 28

Nails

Question 29

Visible portion of the nail

Answer 29

Nail body

Question 30

Portion of the nail that extends past the digit

Answer 30

Free edge

Question 31

Part that is embedded in the fold of the skin

Answer 31

Nail root

Question 32

Half moon whitish proximal area of the nail

Answer 32

Lunula

Question 33

Beneath the free edge which secures the nail

Answer 33

Hyponychium

Question 34

Narrow band of epidermis that adheres to the nail

Answer 34

Eponychium

Question 35

Equipped with different kinds of exocrine glands

Answer 35

Skin

Question 36

Different kinds of exocrine glands

Answer 36

Mammary glands ceruminous glands sebaceous glands sweat glands

Question 37

Also called sudoriferous glands

Answer 37

Sweat glands

Question 38

Two types of sweat glands

Answer 38

Eccrine glands | Apocrine glands

Question 39

Most common than apocrine sweat glands

Answer 39

Eccrine sweat glands

Question 40

Appear as simple coiled tubular glands which number around 3000 per square inch and produce about 600 ml of sweat per day

Answer 40

Eccrine sweat glands

Question 41

They were once thought to release their secretions by pinching off a portion of their cytoplasm

Answer 41

Apocrine glands

Question 42

Release their secretions via exocytosis which is characteristic of merocrine glands

Answer 42

Apocrine glands

Question 43

Secretions of apocrine gland

Answer 43

Cold sweat

Question 44

Human skin is composed of two distinct regions

Answer 44

Outer epidermis | Inner dermis