Integumentary System

Question 1

Covers the entire body

Answer 1

Skin

Question 2

What are the cells of epidermis

Answer 2

1. Keratinocytes
2. Melanocytes
3. Dendritic cells
4. Tactile cells

Question 3

produce keratin, the fibrous protein that helps give the epidermis its protective properties

Answer 3

Keratinocytes

Question 4

the spidershaped epithelial cells that synthesize the pigment melanin

Answer 4

Melanocytes

Question 5

star-shaped dendritic cells arise from
bone marrow and migrate to the
epidermis

Answer 5

Dendritic cells

Question 6

also called Langerhans cells

Answer 6

Dendritic cells

Question 7

present at the epidermaldermal junction

shaped like a spiky
hemisphere

Answer 7

Merkel (tactile) cells

Question 8

What are the two distinct layers of the skin?

Answer 8

Epidermis
Dermis

Question 9

made up of
stratified squamous
epithelium, hardened by
keratin

Answer 9

Epidermis

Question 10

making up the
bulk of the skin, is a tough,
leathery layer composed
mostly of fibrous connective
tissue, vascularized

Answer 10

Dermis

Question 11

What are the layers of epidermis

Answer 11

1. Stratum corneum
2. Stratum lucidum
3. Stratum granulosum
4. Stratum spinosum
5. Stratum basale

Question 12

deepest epidermal layer

Answer 12

Stratum basale

Question 13

contain a weblike system of
intermediate filaments, mainly
tension-resisting bundles of
pre-keratin filaments, which
span their cytosol to attach to
desmosomes

Answer 13

Stratum spinosum

Question 14

process of keratinization
begins

Answer 14

Stratum granulosum

Question 15

Cells flatten, their nuclei and organelles begin to disintegrate, and they accumulate two types of granules:

Answer 15

1. keratohyaline granules
2. lamellar granules

Question 16

help to form
keratin in the upper layers (darkly stained)

Answer 16

Keratohyaline granules

Question 17

contain a water-resistant glycolipid that prevents water loss
across the epidermis

Answer 17

Lamellar granules

Question 18

visible only in thick skin
• consists of two or three
rows of clear, flat, dead
keratinocytes with indistinct
boundaries

Answer 18

Stratum lucidum

Question 19

strong, flexible connective
tissue
• Cells types: fibroblasts,
macrophages, and
occasional mast cells and
white blood cells

Answer 19

Dermis

Question 20

2 layer of dermis

Answer 20

1. Papillary layer
2. Reticular layer

Question 21

Three pigments contribute to skin color:

Answer 21

1. Melanin
2. Carotene
3. Hemoglobin

Question 22

What are the colors of melanin

Answer 22

Yellow
Brown
Black

Question 23

Colors of carotene

Answer 23

Orange-yellow

Question 24

Color of hemoglobin

Answer 24

Red

Question 25

Skin appendages include:

Answer 25

1. Hair and hair follicles
2. Nails
3. Sweat glands
4. Sebaceous (oil) glands

Question 26

Structure of hair

Answer 26

Central medulla (inner)
Cortex (2nd inner)
Cuticle (outer)

Question 27

Types and growth of hair

Answer 27

Vellus hair
Terminal hair

Question 28

faster shedding of hair leading to hair thinning and some degree of baldness

Answer 28

Alopecia

Question 29

Overactive oil glands can cause..

Answer 29

Seborrhea

Question 30

Function of integumentary system

Answer 30

1. Protection
2. Body Temperature Regulation
3. Metabolic Functions
4. Blood Reservoir
5. Excretion