1

Question 1

two major tissue layers of the skin

Answer 1

epidermis and dermis

Question 2

the uppermost layer and it prevents water loss and resist abrasion

Answer 2

epidermis

Question 3

10-20 times thicker than epidermis
and provides most of the skin’s structural strength

Answer 3

Dermis

Question 4

made up
of a loose connective tissue that contains
about half the body’s stored fat. Adipose tissue
in this layer Function as padding and insulation

Answer 4

hypodermis or subcutaneous tissue

Question 5

made up of stratified squamous
epithelium.

Answer 5

epidermis

Question 6

The main cells of the epidermis
are the

Answer 6

keratinocytes

Question 7

Keratinocyte originate in the basal
layer and undergo

Answer 7

Keratinization

Question 8

It is the process where in the
newly formed cells experience
development when these cells
are pushed from the base layers
to the surface.

Answer 8

keratinization

Question 9

epidermis of the skin consists of how many layers?

Answer 9

five

Question 10

The layers of the epidermis are called _____

Answer 10

Strata

Question 11

Layers of epidermis from deepest to superficial

Answer 11

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

Question 12

stratum spinosum mostly consists of ______ held together by sticky proteins called ______

Answer 12

keratinocyte ; desmosomes

Question 13

This layer mostly consists of keratinocytes
held together by sticky proteins called
desmosomes

Answer 13

stratum spinosum

Question 14

partly responsible for the skin’s strength and
flexibility. It contains Langerhans cells
(epidermal immune cells)

Answer 14

Stratum spinosum

Question 15

The stratum spinosum is
partly responsible for the skin’s strength and
flexibility. It contains_________

Answer 15

Langerhans cells
(epidermal immune cells)

Question 16

The stratum spinosum is
partly responsible for the skin’s strength and
flexibility. It contains_________

Answer 16

Langerhans cells
(epidermal immune cells)

Question 17

Consist of single layer of cuboidal cells in
contact with the basement membrane that
undergo mitosis. It contains the keratinocyte
stem cells, and melanocytes

Answer 17

stratum basale

Question 18

stratum basale consist of single layer of cuboidal cells in contact with the basement membrane that
undergo mitosis. It contains the ______, _______ , and _________

Answer 18

keratinocyte, stem cells, melanocytes

Question 19

It is where Keratin is packaged in keratohyaline granules. The keratinocytes produce a lot of keratin in this layer—they become filled with keratin. The keratinocytes become flatter, more brittle, and lose their nuclei

Answer 19

stratum granulosum

Question 20

stratum granulosum is where Keratin is packaged in ___________. The keratinocytes produce a lot of keratin in this layer—they become filled with keratin. The keratinocytes become flatter, more brittle, and lose their nuclei

Answer 20

keratohyaline granules

Question 21

The keratinocytes in this layer also produce
lipids and natural moisturizing factor (NMF)

Answer 21

stratum granulosum

Question 22

Once the keratinocytes leave the stratum
granulosum, they die and help form the

Answer 22

stratum lucidum

Question 23

thin, transparent
layer of keratinocytes that are becoming less
round and have a flatter shape.

Answer 23

stratum lucidum

Question 24

This thin layer of cells is found only in the
thick skin on the palms of your hands and
fingers and the soles of your feet.

Answer 24

stratum lucidum

Question 25

Consist of 25 or more layers of dead squamous cells filled with keratin. Keratinocytes become corneocytes. This layer is also coated and surrounded by lipids, which help prevent fluid loss.

Answer 25

stratum corneum

Question 26

The entire stratum corneum layer is replaced with new cells in a process known as

Answer 26

desquamation

Question 27

Made up of dense collagenous connective tissue with fewer fats cells.

Answer 27

Dermis

Question 28

Nerves, hair follicles, smooth muscles, glands and lymphatic vessels extend to the_______

Answer 28

dermis

Question 29

_____ and _________ are responsible for the structural strength of the dermis.

Answer 29

collagen and elastic fibers

Question 30

_________ of the dermis are oriented in many different locations called cleavage or tension lines

Answer 30

Collagen fibers

Question 31

The skin is more resistant to stretch along this lines

Answer 31

cleavage or tension lines

Question 32

overstretching of the skin that causes damage to the dermis

Answer 32

striae or stretch marks

Question 33

The upper part of the Dermis has projections called __________ which extends towards the epidermis.

Answer 33

dermal papillae

Question 34

Dermal papillae in the palms of the hands and soles of the foot and tips of the digits are in parallel and curving ridges

Answer 34

friction ridges

Question 35

molecule is the group of pigment primarily responsible for skin eyes and hair pigment.

Answer 35

melanin

Question 36

produced by melanocyte

Answer 36

melanin

Question 37

golgi apparatus of the melanocytes package melanin into vesicles called _________

Answer 37

melanosomes

Question 38

Melanin pigment is transferred from melanocytes to the cytoplasm of keratinocytes through ______

Answer 38

phagocytosis

Question 39

Melanin pigment is transferred from melanocytes to the cytoplasm of keratinocytes through ______

Answer 39

phagocytosis

Question 40

______ production is determined by: genetic factors, exposure to light and hormone

Answer 40

melanin

Question 41

A decrease in blood oxygen produces a bluish discoloration termed as

Answer 41

cyanosis

Question 42

are congenital disorders of the blood vessels in the dermis.

Answer 42

birthmarks

Question 43

Each ______ arises form a hair follicle. The shaft of the hair protrudes above the surface of the skin , whereas the root and are below the surface. The hair bulb is the expanded base of the root

Answer 43

hair

Question 44

associated with each hair follicle are smooth muscle cells called

Answer 44

arrector pili muscle.

Question 45

two forms of melanin are found in human hair

Answer 45

eumelanin and pheomelanin

Question 46

is the dominant pigment in brown hair and black

Answer 46

eumelanin

Question 47

is the dominant pigment in red hair.

Answer 47

pheomelanin

Question 48

hair exists in a variety of textures caused by the condition of _______

Answer 48

hair follicle

Question 49

simple branched acinar glands which produced sebum mostly connected to the superficial part of the hair follicle.

Answer 49

sebaceous Gland

Question 50

–coiled tubular glands that produces sweat which is vital for regulating human body temperature.

Answer 50

Sweat Glands/Suderiferous

Question 51

2 types pf sweat glands

Answer 51

Eccrine and apocrine

Question 52

Produce secretion(water with few salts) that open directly to th

Answer 52

eccrine sweat

Question 53

produced thick secretion rich in organic substances. ______ open into the hair follicles, but only in the armpit and genitalia.

Answer 53

apocrine

Question 54

-A thin plate, consisting of dead stratum corneum cells that contains very hard type of keratin - grow continuously and do not have resting stage

Answer 54

nails

Question 55

An injury to the tissue caused by heat, cold, friction, chemicals, electricity or by radiation.

Answer 55

burns

Question 56

Most common type of cancer, and it is mostly associated with exposure to UV light from the sun.

Answer 56

skin cancer

Question 57

Three main type of Skin cancer

Answer 57

1. Basal Cell Carcinoma (most frequent) 2. Squamous cell carcinoma 3. Malignant melanoma (rare form)