Exam 3: integumentary system

Question 1

3 layers of skin from top to bottom

Answer 1

epidermis
dermis
hypodermis

Question 2

epidermis cell composition and function

Answer 2

squamous cells: protection and production of melanin
K: keratinocytes
LL: langerhans cells, lamellar granules
MM: synthesizes melanin, merkel cells
B: basal cells

Question 3

dermis cells

Answer 3

collagen, elastin fibers, blood vessels and capillaries

Composed of papillary layer (our fingerprints)

Question 4

what makes up 80% of the dermis and is made of a thick dense irregular connective tissue

Answer 4

reticular layer

Question 5

hypodermis fct

Answer 5

fat storage, insulation, energy storage, shock absorbtion

Question 6

nail fct + location

Answer 6

protection, toes+fingers

Question 7

where does the nail grow

Answer 7

epidermis

Question 8

sweat gland fct + location

Answer 8

protects skin, thermoregulation and excretion: dermis

Question 9

sebaceous glands

Answer 9

secrete sebum to lubricate and protect skin: epidermis

Question 10

by what are sebaceous glands surrounded by

Answer 10

epidermal cells

Question 11

hair follicles fct + location

Answer 11

anchor hair and grow more hair: in dermis

Question 12

in what do hair grow

Answer 12

epidermis

Question 13

thick vs thin skin

Answer 13

Thick skin: hairless, feet+hands+fingers+toes, dermis thinner, epidermis thicker, no skin appendages except sweat glands
Thin skin: hairs, dermis thicker, epidemris thinner

Question 14

skin cancer cause and symptom

Answer 14

cause: uv
symptom: abcde rule

Question 15

eczema cause and treatment

Answer 15

cause: genetics, environment, stress
symptom: red spot, itching, dry swollen skin

Question 16

alopecia cause and treatment

Answer 16

cause: genetics, stress, hormonal change
symptom: hair loss

Question 17

temperature regulation in human

Answer 17

see loop