Integumentary System

Question 1

Functions of Integumentary System

Answer 1

Protection
Sensation
Production of Vitamin D
Temperature Regulation
Excretion

Question 2

Two major tissue layers of Sking

Answer 2

Epidermis

Dermis

Question 3

type of tissues in Epidermis

Answer 3

squamous epithelium

Question 4

Layers

Answer 4

Stratum basale
Stratum spinosum
Stratum granulosum
Stratum lucidum
Stratum corneum

Question 5

other name of Stratum basale

Answer 5

Stratum germinativum

Question 6

duration of cell division in Stratum basale

Answer 6

19 days

Question 7

description of Stratum spinosum

Answer 7

8-10 layers of many-sided keratinocytes

Question 8

description of Stratum granulosum

Answer 8

3-5 layers flat keratinocytes

Question 9

description of Stratum lucidum

Answer 9

3-5 layers hairless keratinocytes

Question 10

description of Stratum corneum

Answer 10

20-30 layers dead keratinocytes

Question 11

Principal Types of Cells in Epidermis

Answer 11

Keratinocytes
Melanocytes
Langerhans
Merkel Cells

Question 12

programmed cell death

Answer 12

Apoptosis

Question 13

Where does Apoptosis occur

Answer 13

Stratum granulosum

Question 14

duration of journey from stratum basale to corneum

Answer 14

40-56 days

Question 15

Keratinocytes account to ____% of Epidermis

Answer 15

90

Question 16

Two major Parts of Keratinocytes

Answer 16

Keratin and Lamellar Granules

Question 17

Function of Lamellar Granules

Answer 17

h20 Repellant and Sealant

Question 18

Lipid-Rich Granules

Answer 18

Lamellar Granules

Question 19

Melanocytes account to ____% of the Epidermis

Answer 19

8

Question 20

Functions of Melanocytes

Answer 20

skin color, protection

Question 21

Langerhans function

Answer 21

immune responses

Question 22

formed by red bone marrow, migrates to blood vessels then to epidermis

Answer 22

Langerhans

Question 23

Function of Merkel cells

Answer 23

contact with tactile disc of sensory neuron; sensation

Question 24

type of tissue in Dermis

Answer 24

dense connective tissue

Question 25

nerves, hair follicles, smooth muscles, glands and lymphatic vessels extend into the dermis from the hypodermis

Answer 25

dermis

Question 26

2 layers of dermis

Answer 26

Papillary layer | Reticular layer

Question 27

activated Vitamin D

Answer 27

Calcitriol

Question 28

function of Calcitriol

Answer 28

to facilitate the absorption of calcium in small intestine

Question 29

deficiency of calcium of bones

Answer 29

osetomalacia

Question 30

deficiency of calcium of bones in children

Answer 30

rickets

Question 31

upper dermal region

Answer 31

papillary layer

Question 32

fingerlike projections from the upper part of the dermis which extend toward the epidermis

Answer 32

dermal papillae

Question 33

deepest skin layer

Answer 33

reticular layer

Question 34

contains blood vessels, sweat and oil glands and deep pressure receptors

Answer 34

reticular layer

Question 35

type of muscle in Arrector Pili

Answer 35

smooth

Question 36

contraction causes the hair to stand up

Answer 36

Arrector Pili muscle

Question 37

Sebaceous glands are found all over the skin except:

Answer 37

soles and palms

Question 38

function of sebum

Answer 38

lubricate hair and skin surface

Question 39

Other name of sweat glands

Answer 39

sudoriferous glands

Question 40

2 types of Sweat glands

Answer 40

eccrine/merocrine | apocrine

Question 41

almost ever part of skin especially palms and soles | produce sweat

Answer 41

eccrine

Question 42

other name of eccrine

Answer 42

merocrine

Question 43

clear secretion mostly water with a few salts

Answer 43

sweat

Question 44

produce a thick secretion rich in organic substances

Answer 44

apocrine glands

Question 45

apocrine glands are open to

Answer 45

hair follicles only in axillae and genitalia

Question 46

cutaneous glands are influenced by

Answer 46

hormones

Question 47

skin appendages

Answer 47

cutaneous glands,hair, nails

Question 48

nails consist of

Answer 48

layers of dead stratum corneum with hard keratin

Question 49

visible part of nail

Answer 49

nail body

Question 50

acts as a protective shield, shielding the delicate tissues of the underlying nailbed

Answer 50

nail plate

Question 51

found under the nail

Answer 51

nail bed

Question 52

part of the nail covered by skin

Answer 52

nail root

Question 53

stratum corneum that extends into the nail body; protects matrix

Answer 53

cuticle or eponychium

Question 54

from which the nail root extends distally, responsible for nail growth

Answer 54

nail matrix

Question 55

whitish, crescent-shaped area at the base of the nail

Answer 55

lunula

Question 56

produced by a hair follicle

Answer 56

hair

Question 57

sac-like structure in the skin that surrounds the hair root

Answer 57

hair follicle

Question 58

stratum basale epithelial cells that divide to form hair

Answer 58

hair bulb matrix

Question 59

part of the hair enclosed in the hair follicle

Answer 59

hair root

Question 60

part of the hair projecting from the scalp or skin

Answer 60

hair shaft

Question 61

three layers of the shaft

Answer 61

medulla cortex cuticle

Question 62

central core of a hair

Answer 62

medulla

Question 63

surrounds the medulla

Answer 63

cortex

Question 64

outermost layer of cells that surrounds the cortex

Answer 64

cuticle