Ch 5 pt 2

Question 1

types of sweat glands

Answer 1

• eccrine
• apocrine

Question 2

location of eccrine

Answer 2

concentrate on palms, soles of the feet, and forehead

Question 3

structure of the eccrine

Answer 3

coiled, tubular glands in dermis; duct extends into pore at the skin surface

Question 4

composition of secretion of eccrine

Answer 4

mostly water with trace salts, antibodies, metabolic wastes

Question 5

function of eccrine

Answer 5

prevent overheating of the body

Question 6

location of apocrine

Answer 6

axillary and anogenital regions

Question 7

structure of ecrrine

Answer 7

ducts empty into hair follicles

Question 8

composition of secretions of eccrine

Answer 8

same as true sweats, plus lipids and proteins: when decomposed by bacteria on the skin -> body odor

Question 9

function of eccrine

Answer 9

not yet known, starts at puberty and are activated by pain, stress, and arousal - sexual scent glands

Question 10

modifications of eccrine

Answer 10

ceruminous and mammary

Question 11

ceruminous gland

Answer 11

found in the external ear canal; secret cerumen (earwax); deters insects and blocks entry of foreign substances

Question 12

mammary gland

Answer 12

secrete milk

Question 13

location fo secaceous (oil) gland

Answer 13

all of the body except palms and soles

Question 14

function of sebaceous (oil) gland

Answer 14

secrete sebum, an oily substance that softens and lubricated hair and skin, slows water loss, and is bacterial

Question 15

location of hair & hair follicles

Answer 15

distributed over the entire skin surface except palms, soles, lips, nipples and portions of the external genitalia

Question 16

function of hairs & hair follicle

Answer 16

a. sense insects on the skin
b. guard head against physical trauma, heat loss, and sunlight
c. eyelashes shield the eyes
d. nose hairs filter large particles from air

Question 17

structure of a hair

Answer 17

flexible strands produced by hair follicles; consist largely of dead, keratinized cells

Question 18

structure of a hair follicle

Answer 18

a. fold down from epidermal surface into the dermis
b. arrector pili muscle- bundle of smooth muscle cells; contraction cuases hair to stand on end in response to cold or fear

Question 19

types of hair

Answer 19

vellus and terminal