section 5.1-5.3

Question 1

what body system consists of sweat and oil glands, hairs, and nails?

Answer 1

integumentary system

Question 2

what is the main function of the integumentary system?

Answer 2

to protect the body

Question 3

what are the two layers of skin?

Answer 3

epidermis and dermis

Question 4

what layer of skin is composed of epithelial cells?

Answer 4

epidermis

Question 5

what layer of skin is the outermost layer?

Answer 5

epidermis

Question 6

what layer of skin is vascularized?

Answer 6

dermis

Question 7

what layer of skin makes up the bulk of the skin?

Answer 7

dermis

Question 8

what layer of skin is tough and leathery?

Answer 8

dermis

Question 9

what layer of skin is composed of dense connective tissue?

Answer 9

dermis

Question 10

what lies deep of the skin and is composed of adipose and areolar tissue?

Answer 10

subcutaneous layer

Question 11

what part of the skin anchors skin to structures?

Answer 11

subcutaneous layer

Question 12

what part of the skin acts as a shock absorber and an insulator?

Answer 12

subcutaneous layer

Question 13

name the different cells of the epidermis

Answer 13

1. keratinocites
2. melanocytes
3. dendritic cells
4. tactile epithelial cells

Question 14

what cells of the epidermis produce keratin and are composed of mostly epithelial cells?

Answer 14

keratinocytes

Question 15

what cells of the epidermis synthesize melanin and are found in the deepest layer of the epidermis?

Answer 15

melanocytes

Question 16

what cells of the epidermis arise from bone marrow and are key activators in the immune system?

Answer 16

dendritic cells

Question 17

what cells are aka langerhans cells?

Answer 17

dendritic cells

Question 18

what cells of the epidermis are aka Menkel cells?

Answer 18

tactile epithelial cells

Question 19

what cells of the epidermis function as sensory receptors for touch?

Answer 19

tactile epithelial cells

Question 20

what kind of skin covers areas subject to abrasions?

Answer 20

thick skin

Question 21

what kind of skin is found on palms, fingertips, and soles of feet?

Answer 21

thick skin

Question 22

name the layers of the epidermis from outermost to deepest

Answer 22

stratum corneum
stratum lucidum
stratum granuloseum
stratum spinosum
stratum basale

Question 23

what epidermal layer is the outermost layer and composes 3/4 of epidermal thickness?

Answer 23

stratum corneum

Question 24

what epidermal layer is found only in thick skin and is made of flat, dead keratinocytes?

Answer 24

stratum lucidum

Question 25

what epidermal layer is 1-5 cell layers deep and is where keratinization begins?

Answer 25

stratum granulosum

Question 26

what epidermal layer contains thick bundles of intermediate filaments that are made of pre-keratin?

Answer 26

stratum spinosum

Question 27

what epidermal layer is the deeper layer and consists of a single row of stem cells?

Answer 27

stratum basale

Question 28

what epidermal layer is aka stratum germinativum?

Answer 28

stratum basale

Question 29

what is the process in which cells fill with keratin?

Answer 29

keratinization

Question 30

during keratinization, what two types of granules are formed?

Answer 30

keratohyaline granules and lamellar granules

Question 31

what granule contains a water-resistant glucolioid thats secreted into extra cellular space?

Answer 31

lamellar granules

Question 32

what type of granule helps form keratin in upper layers?

Answer 32

keratohyaline granules

Question 33

what skin layer is made of strong, flexible, connective tissue?

Answer 33

dermis

Question 34

what are the two layers of the dermis?

Answer 34

papillary and reticular

Question 35

what dermal layer is thin and superficial and is made of areolar tissue?

Answer 35

papillary dermis

Question 36

what dermal layer is laced with collagen and elastic fibers?

Answer 36

papillary dermis

Question 37

what dermal layer is loose enough to allow for the the movement of phagocytes?

Answer 37

papillary dermis

Question 38

what dermal layer accounts for 80% of the thickness of the dermis?

Answer 38

reticular dermis

Question 39

what dermal layer is composed of course, dense, irregular connective tissue?

Answer 39

reticular dermis

Question 40

what lies between the reticular dermis and the subcutaneous layer?

Answer 40

dermal vascular plexus

Question 41

what exists between collagen fibers and are less dense regions in the reticular dermis?

Answer 41

cleavage (tension) lines

Question 42

what indent the overlying epidermis?

Answer 42

dermal papillae

Question 43

what are peglike projections that lie on dermal ridges on plans or soles of feel?

Answer 43

dermal papillae

Question 44

what are dermal folds near the joints that can be seen in the deep creases of palms?

Answer 44

flexure lines

Question 45

what enhances grip and contributes to sense of touch by lamellar corpuscles?

Answer 45

friction ridges

Question 46

sweat pores in ridges cause what?

Answer 46

fingerprints