Chapter 6

Front 1

___________ covers the palms, soles, and corresponding surfaces of the figures and toes. It epidermis alone is about 0.5 mm thick.

Back 1

Thick skin

Front 2

THe functions of the skins :

Back 2

Resistance to trauma and infection, Other barrier functions, Vitamin D Synthesis, Sensation, Thermoregulation, and Social Functions

Front 3

Cell of the Epidermis:

Back 3

Stem cells, Keratinocytes, Melanocytes, Tactile Cell, Dendritic cells

Front 4

Layers of the Epidermis :

Back 4

Stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, and stratum corneum

Front 5

___________ consists mainly of a single layer of cuboidal to low calumanr stem cells and keratinocytes resting on the basement membrane.

Back 5

stratum basale

Front 6

___________ consists of several layers of keratinocytes. In most skin, this is the thickest stratum, but in think skin it is usually exceeded by the stratum corneum.

Back 6

stratum spinosum

Front 7

___________ consists of three to five layers of flat keratinocytes, more think skin than in thin skin .

Back 7

stratum granulosum

Front 8

Beneath the epidermis is a connective tissue layer called ___________ . It ranged from 0.2 mm thick in the eyelid to about 4 mm thick in the palms and soles.

Back 8

Dermis

Front 9

____________ of the dermis is deeper and much thicker. It is consists of dense irregular connective tisue.

Back 9

Reticular layer

Front 10

_____________ is hypodermis composed predominantly of adipose tissue. THis fat is serve as an energy reservoir and thermal insultation.

Back 10

Subcutaneous Fat

Front 11

________ is the red pigment of blood, imparts reddish hues to the skin.

Back 11

hemoglobin

Front 12

______ a yellow pigment acquired from egg yolk and yellow and orange vegetables.

Back 12

Carotone

Front 13

_________ is a genetic lack of melamin that results in white hair.

Back 13

Albanism

Front 14

bruise is a mass of clotted bloos showing through the skin.

Back 14

Hematoma

Front 15

_________ are the markings on the fingertips that leave distinctive oily fingerprints on surfaces we touch.

Back 15

Friction ridges

Front 16

____________ are lines on the flexor surfaces of the digits, palms, wrists, elbow, and other places.

Back 16

Flexion lines

Front 17

_____ is birthmarks, patches of discolored skin caused by benign tumor of the dermal blood capillaries.

Back 17

Hermangiomas

Front 18

The hair, nails, and cutaneous glands are _____________.

Back 18

accesory organs

Front 19

hair is also known as

Back 19

pilus

Front 20

________ is fine, downy unpigmented hair that appears on the fetus in the last 3 months of development.

Back 20

Lanugo

Front 21

_________ is a longer, coarser, and pigmented. IT forms the eyebrows and eyelashes, covered the scalp.

Back 21

Terminal hair

Front 22

The hair bulb, all the tiisue is dead. The hair bulb grows around a bud of vascular connective tissues called _________.

Back 22

Dermal papilla

Front 23

__________ is a core of loosely arranged cells and air spaces found in thivk hairs, but absent from thin ones.

Back 23

medulla

Front 24

_________ is a surface layers of scaly cells that over laps each other like roof shingles, with their free edged directed upward.

Back 24

cuticle

Front 25

_________ consisting of three stages, anagen, catagen, and telogen.

Back 25

Hair Cycle

Front 26

Follicles also shrink and begin producing wispy vellus hairs instead of thicker terminal hair.

Back 26

Alopecia

Front 27

____________ is the condition in which hair is lost from specific regions of the scalp. IT results from a combination of genetic and hormonal influence.

Back 27

Pattern Baldness

Front 28

_______ tends to run in women and children . it is excessive or undessirable hairness in areas that are not usually hairy.

Back 28

hirsutism

Front 29

They are composed of very thin, dead, scaly cells, densely packed together and filled with parallel fibers of hard kinetin.

Back 29

Nails

Front 30

_____________ a growth zone concealed beneath the skin at the proximal edge of the nail.

Back 30

Nail matrix

Front 31

_________ are most numerous gland of the skin, produce watery perspiration that serves primarily to cool the body.

Back 31

Merocrine sweat gland

Front 32

________ are properties similar to smooth muscle.

Back 32

Myoepithelial cells

Front 33

_________ occurs in the groin, anal region, axilla, and areola, and in mature males, the beard area.

Back 33

Apocrine sweat cell

Front 34

sweating with wetness of the skin is called ___________

Back 34

diaphoresis

Front 35

_______________ produce an oily secretion callled ________(B)

Back 35

Sebaceous
(B) Sebum

Front 36

________ are found only in the external ear canal, where their secretion combines with _______

Back 36

Ceruminous
Cerumen

Front 37

________ is the most common type, but it is also the least dangerous because it seldom metastasize. It rises from cells of the stratum basal and eventually invades the dermis.

Back 37

Basal cell carcinoma

Front 38

__________ arises from keratincytes of the stratm spinosum. Lesion usually appear on the scalp, ears, lower lips, or back of the hand.

Back 38

Squamous cell carcinoma

Front 39

___________ is the most deadly skin cancer but accounts for only 5% of all cases. it often arises from the melanocytes of a preexicting mole

Back 39

Malignant melanoma

Front 40

_____ the burned, dead tissue.

Back 40

eschar

Front 41

__________ involve the epideris and part of the dermis but leave at least some of the dermis intact.

Back 41

Second -degree burns

Front 42

This layer is absent in thin skin:

Back 42

stratum lucidum

Front 43

This structure produces "goose bumps":

Back 43

arrector pili

Front 44

This epidermal layer is found only in thick skin:

Back 44

stratum lucidum

Front 45

Blond hair:

Back 45

has a sparce amount of melanin in the cortex.

Front 46

Which of the following will not be a result from high levels of exposure to ultraviolet light in a normal person?

Back 46

healthy skin

Front 47

The hair of the fetus is called:

Back 47

vellus

Front 48

Which of the following does not contibute to skin color?

Back 48

hair color

Front 49

Which type of skin graft is unlikely to cause an immune reaction?

Back 49

isograft

Front 50

The epithelium of the nail bed is called:

Back 50

hyponychium

Front 51

When you walk outside barefoot, in which part of your toenail will dirt adhere and be the most difficult to remove?

Back 51

the hyponychium

Front 52

Which of the following statements about sweat glands is incorrect?

Back 52

A milky perspiration containing fatty acids is secreted by merocrine sweat glands.

Front 53

Which of the following types of skin cancer is the least dangerous because it seldom metastasizes?

Back 53

squamous cell carcinoma

Front 54

The layer also known as the stratum germinativum is the:

Back 54

stratum basale

Front 55

This structure serves an excretory function:

Back 55

apocrine sweat gland
exocrine sweat gland