Integumentary System

Question 1

Layers of human skin

Answer 1

epidermis and dermis

Question 2

Layers of epidermis

Answer 2

Stratum Cornem
Stratum Lucidum
Stratum Granulsum
Stratum Spinosum
Stratum Basale (Stratum Greminativum)

Question 3

Layers of dermis

Answer 3

Stratum Papillare

Stratum Reticulare

Question 4

What does the Integumentary system do?

Answer 4

protects from injury, fluid loss, and microorganisms; regulate body temperature and fluid balance and provides sensation

Question 5

What is in the Integumentary system comprised of?

Answer 5

hair, skin, nails

Question 6

Stratum Corneum

Answer 6

outermost layer of epidermis, also called the horny layer

Question 7

Stratum Lucidum

Answer 7

clear layer of the skin (part of epidermis) that is normally only found on the palms of the hands and soles of the feet

Question 8

Stratum Granulosum

Answer 8

part of epidermis, granular layer of cells that accumulate to types of granules; keratohyalin and lamellated granules

Question 9

Stratum Spinosum

Answer 9

part of epidermis, composed of prickle cells

Question 10

Stratum Basale (Stratum Germinativum)

Answer 10

part of epidermis, deepest of the five layers, made of basal cells

Question 11

Stratum Papillare

Answer 11

part of dermis, thin superficial layer interlocked with the epidermis

Question 12

Stratum Reticulare

Answer 12

part of dermis, thick layer of dense irregular connective tissue

Question 13

What does the dermis contain?

Answer 13

vessels carrying blood and lymph, nerves and nerve endings, glands, and hair follicles

Question 14

Structures of the hair

Answer 14

follicle and shaft

Question 15

papilla

Answer 15

blub like projection at base of follicle

Question 16

inner sheath of follicle

Answer 16

ends at opening of the seabaceous gland, which secretes sebum

Question 17

follicle outer sheath and muscles

Answer 17

muscles, called the arrector pili, attach to the outer sheath and causes hair to stand up when it contracts

Question 18

shaft of hair

Answer 18

composed of keratin in three layers, the medulla, cortex, and cuticle. pigment calls in the cortex and medulla give hair its characteristic color

Question 19

what parts is the nail divided into

Answer 19

root, nail bed, nail plate, cuticle, perionuchuim, and the hyponychium

Question 20

root of nail

Answer 20

aka germinal matrix, lies beneath the skin behind the fingernail and extends several mm into the finger, produces most of the volume of the nail and nail bed, its edge is the white crescent shape structure called the lunula

Question 21

nail bed

Answer 21

aka sterile matrix, extends from the edge of the lunula to the hyponychium, contains the blood vessels, nerves, and melanocytes (melanin-producing cells)

Question 22

nail plate

Answer 22

the actutal fingernail, made of translucent keratin. blood vessels underneath give the nail its pink appearance;the grooves along the nail anchor the nail to the nail bed

Question 23

cuticle

Answer 23

aka eponychium, between the skin of the finger and the nail plate that fuses the skin of the finger to the nail plate

Question 24

perionychium of nail

Answer 24

aka paranychial edge, the skin that overlies the nail plate on its sides

Question 25

hyponychium

Answer 25

the junction between the free edge of the nail and the skin