02 INTEGUMENTARY SYSTEM

Question 1

What system makes up of your body’s outer layer. It’s made up of your skin, nails, hair and the glands and nerves on your skin. Your ___________ acts as a physical barrier — protecting your body from bacteria, infection, injury and sunlight. It also helps regulate your body temperature and allows you to feel skin sensations like hot and cold.

Answer 1

Integumentary System

Question 2

What are the functions of Integumentary Sytsem?

Answer 2

 Body temperature regulation
 Stores blood
 Protection from the external environment
 Detects cutaneous sensations
 Excrete and absorb substances
 Synthesize vitamin D

Question 3

_______ is the largest and heaviest organ in your body.

Answer 3

Skin

Question 4

All of the following are components of
the Integumentary System, except:

a. Skin
b. Hair
c. Oil and sweat glands
d. Nerves
e. Nails
f. Sensory receptors
g. All of the above
h. None of the above

Answer 4

D. Nerves

Question 5

Layers of the Skin

Answer 5

 Epidermis
 Dermis
 Subcutaneous Layer
 Skin Appendages

Question 6

The ____________ is the most superficial layer of the skin and provides the first barrier of protection from the invasion of substances into the body.

Answer 6

Epidermis

Question 7

____________, a protein inside skin cells, makes up the skin cells and, along with other proteins, sticks together to form this layer.

Answer 7

Keratin

Question 8

Layers of Epidermis ( Superficial to Deep)

Answer 8

 Stratum corneum
 Stratum lucidum
 Stratum granulosum
 Stratum spinosum
 Stratum basale

Question 9

flattened dead keratinocytes

Answer 9

 Stratum corneum

Question 10

Present only on thick skin (palm, fingertip, sole)

Answer 10

Stratum lucidum

Question 11

Keratohyalin and lamellar granules

Answer 11

Stratum granulosum

Question 12

Keratinocytes are larger and rounder

Answer 12

Stratum spinosum

Question 13

Deepest, single row of cuboidal or columnar keratinocytes

Answer 13

Stratum basale

Question 14

This is the layer of the epidermis that you see.

Answer 14

Stratum Corneum

Question 15

_______________ are strong, dead keratinocytes, and they protect you from harm, including abrasions, light, heat and pathogens.

Answer 15

Corneocytes

Question 16

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

Answer 16

Stratum lucidum

Question 17

Keratinocytes have granules within them, and in this layer they’re visible under a microscope.

Answer 17

Stratum granulosum

Question 18

This layer mostly consists of keratinocytes held together by sticky proteins called desmosomes The ___________ helps make your skin flexible and strong.

Answer 18

Stratum spinosum

Question 19

New skin cells develop in this layer.

Answer 19

Stratum basale

Question 20

Produce the protein keratin.

Answer 20

Keratinocyte stem cells

Question 21

Epidermal Cells

Answer 21

 Keratinocyte
 Melanocyte
 Intradermal macrophage (Langerhans cell)
 Tactile epithelial cell (Merkel cell)

Question 22

Epidermal Cell: Tough, fibrous, for protection.

Answer 22

Keratinocyte

Question 23

Epidermal Cell: Produces Melanin, for skin color and pigmentation

Answer 23

Melanocyte

Question 24

Epidermal Cell: Role in immune response

Answer 24

Intradermal macrophage

Question 25

Epidermal Cell: Deepest, detect touch sensation

Answer 25

Tactile epithelial cell

Question 26

Other term for Intradermal macrophage

Answer 26

Langerhans Cell

Question 27

Other term for Tactile epithelial cell

Answer 27

Merkel Cell

Question 28

The ______ makes up 90% of skin’s thickness.

Answer 28

Dermis

Question 29

Layers of Dermis

Answer 29

 Papillary layer  Reticular layer

Question 30

1/5th of dermis, loose areolar connective tissue

Answer 30

Papillary layer

Question 31

4/5th of dermis, dense connective tissue

Answer 31

Reticular layer

Question 32

Excessive amount of keratinized cells shed from the skin of the scalp

Answer 32

Dandruff

Question 33

Condition resulting from premature shedding of keratinocytes, only 7-10 days moving from stratum basale to stratum corneum

Answer 33

Psoriasis

Question 34

Permanent coloration of the skin in which a foreign pigment is deposited with a needle into macrophages of the skin

Answer 34

Tattooing

Question 35

Accessory structures of the skin (3)

Answer 35

 Hair  Nails  Skin glands

Question 35

______________ are anatomical skin-associated structures that serve a particular function including sensation, contractility, lubrication and heat loss in animals.

Answer 35

Skin appendages

Question 36

Basically, accessory structures of the skin

Answer 36

Skin appendages

Question 37

Skin Appendages: Columns of dead, keratinized epidermal cells bonded together by extracellular protein

Answer 37

Hair

Question 37

Function of Skin appendages (2)

Answer 37

 Protection  Body temperature regulation

Question 38

Skin Appendages: Tightly packed, hard, dead, keratinized epidermal cells

Answer 38

Nails

Question 39

Skin Appendages: Sebaceous and sweat glands

Answer 39

Skin glands

Question 40

What are the functions of Hair?

Answer 40

 Guards the scalp from injury and the sun's rays  Decreases heat loss from the scalp  Eyebrows and eyelashes protect the eyes from foreign particles  Function in sensing light touch

Question 41

The ______ is a platelike, keratinous, translucent structure that consists of highly specialized epithelial cells.

Answer 41

Nail

Question 42

Your _____ protect the ends of your fingers and toes.

Answer 42

Nails

Question 43

The anatomy of your nail consists of: (5)

Answer 43

 Nail plate  Nail bed  Cuticle  Matrix  Lunula

Question 44

The hard part of your nail you can see.

Answer 44

Nail Plate

Question 45

The skin under your nail plate.

Answer 45

Nail Bed

Question 46

The “root” of your nail responsible for making it grow.

Answer 46

Matrix

Question 47

The white, moon-shaped part of your nail plate.

Answer 47

Lunula

Question 48

________ are found throughout your skin. They release materials like water, salt or oil from under your skin to the surface of your skin.

Answer 48

Skin Glands

Question 48

The thin skin at the base of your nail plate.

Answer 48

Cuticle

Question 49

What are the three Skin Glands

Answer 49

 Sebaceous (oil) glands  Sudoriferous (sweat) glands  Ceruminous glands

Question 50

___________________, also known as sweat glands, are either of two types of secretory skin glands, eccrine or apocrine.

Answer 50

Sudoriferous (sweat) glands

Question 50

Two Kinds of Sudoriferous (sweat) glands

Answer 50

 Eccrine  Apocrine

Question 51

Simple, coiled tubular glands, secretion is mostly water, ("secrete outwardly”)

Answer 51

Eccrine

Question 52

Simple, coiled tubular glands but have larger ducts and lumens, secretion appears more milky and yellowish in color

Answer 52

Apocrine

Question 53

Simple, branched acinar (rounded) glands

Answer 53

Sebaceous (oil) glands

Question 54

Secretion: Sebum

Answer 54

Sebaceous (oil) glands

Question 55

_________________ are an organ in your skin that make and secrete sebum.

Answer 55

Sebaceous (oil) glands

Question 56

Modified sweat glands in the external ear

Answer 56

Ceruminous glands

Question 57

Secretion: waxy lubricating secretion

Answer 57

Ceruminous glands