integumentary system

Question 1

layers of the epidermis in thick skin

Answer 1

• stratum corneum
• stratum lucidum
• stratum granulosum
• stratum spinosum
• stratum basale

Question 2

layers of the epidermis in thin skin

Answer 2

• stratum corneum
• stratum granulosum
• stratum spinosum
• stratum basale

Question 3

layers of the dermis

Answer 3

• papillary layer of the dermis

- reticular layer of the dermis

Question 4

layers of the skin

Answer 4

• epidermis
• dermis
• hypodermis

Question 5

majority of the cells seen in the epidermis

Answer 5

keratinocytes

Question 6

• primarily in the stratum basale

- produce melanin

Answer 6

melanocytes

Question 7

• primarily in the stratum spinosum

- spidery shaped cells

Answer 7

langerhans cells

Question 8

• clearish cells
• primarily in the stratum basale
• pick up vibrations

Answer 8

merkel cells

Question 9

• very thick
• many layers of dead cells
• look flaky and detached

Answer 9

stratum corneum

Question 10

• looks blue due to the dead cells
• discontinuous layer
• only in thick skin

Answer 10

stratum lucidum

Question 11

• discontinuous layer
• 2 or more cells thick
• cells look grainy

Answer 11

stratum granulosum

Question 12

• thick later

- cells in this layer look spiky

Answer 12

stratum spinosum

Question 13

• single row of cells

- lowest layer of the epidermis

Answer 13

stratum basale

Question 14

• aka the superficial fascia

- made of adipose loose connective tissue

Answer 14

hypodermia

Question 15

• also called lamellar corpuscle
• found in the reticular layer of the dermis
• sensitive to vibrations

Answer 15

pacinian corpuscle

Question 16

• also called tactile corpuscles
• found in the papillary layer of the dermis
• rapidly adapting light touch receptors

Answer 16

messier’s corpuscles

Question 17

• part of hair protruding from the skin

Answer 17

hair shaft

Question 18

• part of hair anchored in the skin

Answer 18

hair root

Question 19

• surface of the hair cortex

- resembles roof shingles

Answer 19

hair cuticle

Question 20

• outer part of the hair

- where color is located

Answer 20

hair cortex

Question 21

• center of the hair

- gives it its thickness

Answer 21

hair medulla

Question 22

• round part of the hair root at the bottom

Answer 22

hair bulb

Question 23

• bump of the tissue within the hair bulb

Answer 23

hair papilla

Question 24

• made of hard keratin

Answer 24

nail plate

Question 25

• where the skin merges with the top of the nail plate

- another name for the cuticle

Answer 25

eponychium

Question 26

• where the skin merges with the bottom of the nail plate

- another name for the quick

Answer 26

hyponychium

Question 27

• mostly not visible
• where the nail grows outward
• wrapped by the nail matrix cells

Answer 27

nail root

Question 28

• most visible part of the nail root

Answer 28

lunula

Question 29

• these cells wrap around the proximal end of the nail root

Answer 29

nail matrix

Question 30

• nail plate is attached to this

Answer 30

nail bed