Layers
What is the innermost layer of the skin?
hypodermis
List 3 functions of the skin.
resistance to trauma and infection, other barrier functions, vitamin D synthesis, excretion, sensation, thermoregulation, nonverbal communication
What is the name for the genetic lack of melanin?
albinism
What are the two types of sweat glands?
apocrine and eccrine
Which hair follicle is more narrow rather than rounded
wavy/curly
epidermis
Where is UV radiation blocked?
epidermis
What is the name for blueness of the skin resulting from a decficiency of oxygen in the circulating blood?
cyanosis
What is the role of sebaceous glands?
produce an oily secretion called sebum
What is the name for thinning of the hair/balding?
alopecia
What are the two layers of the dermis?
papillary layer, reticular layer
What is the name for the nerve endings that assist in thermoregulation?
thermoreceptors
jaundice
What glands aide in lactation?
About how much does your fingernail grow each week?
1 mm
Name 3 cells of the epidermis
Where in our body are sensory receptors the most abundant?
face, palms, fingers, soles, nipples, genitals
What is the name for abnormal redness of the skin? (ex. hot flash, sunburn, anger, embarassment)
erythema
What gland produces ear wax?
What is the lunule of the nail?
the white crescent at the base of the nail
stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, stratum basale
What is the role of the acid mantle in the epidermis?
protective film with antimicrobial chemicals to limit bacteria and fungi
What is the name for a pale or ashen color that occurs when there isn't enough blood flow that the white of the dermal collagen shows through the skin?
Why are apocrine glands scarce in East Asians?
they had little need to sweat in such a cold environment
What are the four stages of the hair cycle?
anagen (early), anagen (mature), catagen, telogen