-
What is another term for the hair follicle receptor?
root hair plexus
-
Hair follicle receptor is the _________ ______ ________ around each hair bulb.
sensory nerve endings
-
How is the hair follicle receptor stimulated?
bending of hair
-
The smooth muscle attached to the follicle is the __________ _______ muscle.
arrector pili
-
Arrector pilli muscle is responsible for
_________ _________.
goose bumps
-
Two types of hair are __________ & __________.
-
What is pale, fine body hair of children and adult females?
vellus
-
Coarse, long hair of eyebrows, scalp, axillary, and pubic regions (face and neck of males) is ____________.
terminal
-
____________ is hair thinning in both sexes after age 40.
Alopecia
-
True (frank) baldness is ___________ determined & ________ influenced condition.
genetically, sex
-
Male pattern baldness is caused by follicular response to _______.
DHT
-
Scalelike modification of the epidermis on the distal, dorsal surface of fingers and toes is the ________.
nail
-
Low pH secretions and defensions ________ bacterial activity.
retard
-
Low ph secretions is _______ _________.
acid matle
-
(Physical/mechanical barriers)
___________ & ___________ block most water and water soluble substances.
keratin & glycolipids
-
Physical barriers allow limited penetration of skin by:
- lipid soluble substances
- plant oleoresins
- organic solvents
- salts of heavy metals
- some drugs
-
Biological barriers are important because of what?
- dendritic cells
- macrophages
- DNA
-
______ ml/day of routine perspiration is important.
500
-
What cools the body at elevated body temperature?
dilation of dermal vessels & increased sweat gland activity
-
Cutaneous sensations are importan for __________, _________, and _________.
-
Metabolic functions of the Integumentary system is synthesis of _________ __ _________ & __________.
Vitamin D precurser & collagenase
-
Chemical conversion of _________ & some _____________ is another metabolic importance.
carcinogens and hormones
-
Blood reservoir contains up to ____% of body's blood volume.
5%
-
What are some excretions of the skin?
- nitrogenous wastes
- salt in sweat
-
Most skin cancers are _________.
benign
-
What does benign mean?
do not metastasize
-
What are risk factors of skin cancers?
- over exposure to UV radiation
- frequent irritation of the skin
-
Some skin lotions contain ______ in _________ that can fix damaged DNA.
enzymes, liposomes
-
What are 3 major types of skin cancer?
- Basal cell carcinoma
- Squamous cell carcinoma
- melanoma
-
___________ is least malignant, most common skin cancer.
Basal Cell Carcinoma
-
______________ is second most common skin cancer.
Squamous Cell Carcinoma
-
Most dangerous skin cancer is ___________.
Melanoma
-
What do stratum basale cells do?
poliferate
-
Basale cells slowly invade the ___________ & _______________.
dermis & hypodermis
-
Basal cell carcinoma is cured by ____________ ____________ in 99% of cases.
surgical excision
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