Science Section
, Integumentary
SKIN 12 layers)
•
sense of touch
organ
-_
" "
•
protection AAWreeet-oorrpiikiimmwsc.ae ; goose bump formation on skin
•
Temperature regulation 112200001--1 hhaairr Pile* $ ; feel something touch hair
Excrete stress mme.eu#nneerrssccoorrpW$euee; skin sensitivity light touch
•
to
•
vitamin D synthesis Ppaaccinniaanncorrpvsseiee ; sensitivity to pain/ pressure
Epidermis :
Superficial layer ; does not contain any blood
vessels Stratified
.
squamous epithelium . DEAD cells
Deepest portion of epidermis :$# rraattwmmbbas.ae ,
its a
single
of cells that division LMHOSIS)
layer continually undergo
lkeerraattlnn ; waxy protein that helps waterproof skin
mmeellaannooccyyttee ; skin color
Dermis : connective tissue ; nerve endings and blood vessels found Touch pain heat cold
.
, .
,
Papillary region / Reticular region elastin / collagen fibers
↳ fingerprints ↳ 80%01 dermis , made of collagen fibers
-
Hypodermis ( Subcutaneous) : not a layer , fat adipose c. T
cushion and insulate body
Temperature Ot
body is controlled by a
Negative feedback system .
☒ eeeeeppttoorrss ; sensory cells ( dermis) Vvaassooddiillaattiioonn ; blood vessels release heat to
E- Effectors ; sweat
glands ,
blood vessels ,
muscles lower body temp
E- *
ooerriinneeggllaannddss Earline ggtaannddss mostly Hao with few salts
secrete substances into ducts not connected to hair follicles
-
forehead ,
neck , back
-
activated by body temp
sseebbaaee 000$
ggiaannddss
"
holocrine glands A- ppppooerriinneeggiaannddss fatty acids
"
secrete sebum
an oily mixture of lipids / proteins -
armpits groin palms soles of feet
, , ,
-
stress / anxiety body odor
$wwea* ggilaannddsslsuucdoorriifferrouvs
eccrine or apocrine 1330$01 eat carrot momma common SKIN cancer
, Reproductive
male system
•
produce maintain and transfer
,
sperm and semen into female reproductive tract and
to produce and secrete male hormones
External structures :
penis ,
scrotum ,
and testes
penis : contains the urethra ,
can fill with blood and become errect ,
enabling the
deposition of semen and sperm into female Reproductive tract .
$err0#wm_m :
sac of skin and smooth muscle that houses the testes and keeps them
at the proper temp for spermatogenesis contain . nerves and blood vessels .
contract → closer to
body Relax → move
away
Tteessttees Gonads
:
, produce sperm and testosterone
-
←
Internal structures : epididymis ,
Vas deferens ,
ejaculatory
ducts , urethra , seminal vescicies ,
prostate gland , and bvlbovrethral glands .
Epididymis ; stores sperm as it matures
through NÉE to
egjaaevviaalt-oorryyddwe.tt#nnaaEssieeess
mature sperm moves from epididymis
fluids and D
:
ejaculatory
secrete alkaline with proteins mucus into
fluid
BWssttaalt-ee.gg#nndd :
secretes a Milky white with proteins / enzymes semen
BBHbboowrreetthhrraaikeowwppeerrsggiaannddD-e.se Crete fluid into urethra to neutralize
acidity
Hormones :
¥8111
iicdeesslt-immwiaattanng.gs hhoorrmmoonnee; stimulates spermatogenesis
11W #
einniztnngg ttloorrmmoonnee; stimulates testosterone production
Testosterone; responsible for male characteristics
tubules
sperm production begins seminiferous
=
, Integumentary
SKIN 12 layers)
•
sense of touch
organ
-_
" "
•
protection AAWreeet-oorrpiikiimmwsc.ae ; goose bump formation on skin
•
Temperature regulation 112200001--1 hhaairr Pile* $ ; feel something touch hair
Excrete stress mme.eu#nneerrssccoorrpW$euee; skin sensitivity light touch
•
to
•
vitamin D synthesis Ppaaccinniaanncorrpvsseiee ; sensitivity to pain/ pressure
Epidermis :
Superficial layer ; does not contain any blood
vessels Stratified
.
squamous epithelium . DEAD cells
Deepest portion of epidermis :$# rraattwmmbbas.ae ,
its a
single
of cells that division LMHOSIS)
layer continually undergo
lkeerraattlnn ; waxy protein that helps waterproof skin
mmeellaannooccyyttee ; skin color
Dermis : connective tissue ; nerve endings and blood vessels found Touch pain heat cold
.
, .
,
Papillary region / Reticular region elastin / collagen fibers
↳ fingerprints ↳ 80%01 dermis , made of collagen fibers
-
Hypodermis ( Subcutaneous) : not a layer , fat adipose c. T
cushion and insulate body
Temperature Ot
body is controlled by a
Negative feedback system .
☒ eeeeeppttoorrss ; sensory cells ( dermis) Vvaassooddiillaattiioonn ; blood vessels release heat to
E- Effectors ; sweat
glands ,
blood vessels ,
muscles lower body temp
E- *
ooerriinneeggllaannddss Earline ggtaannddss mostly Hao with few salts
secrete substances into ducts not connected to hair follicles
-
forehead ,
neck , back
-
activated by body temp
sseebbaaee 000$
ggiaannddss
"
holocrine glands A- ppppooerriinneeggiaannddss fatty acids
"
secrete sebum
an oily mixture of lipids / proteins -
armpits groin palms soles of feet
, , ,
-
stress / anxiety body odor
$wwea* ggilaannddsslsuucdoorriifferrouvs
eccrine or apocrine 1330$01 eat carrot momma common SKIN cancer
, Reproductive
male system
•
produce maintain and transfer
,
sperm and semen into female reproductive tract and
to produce and secrete male hormones
External structures :
penis ,
scrotum ,
and testes
penis : contains the urethra ,
can fill with blood and become errect ,
enabling the
deposition of semen and sperm into female Reproductive tract .
$err0#wm_m :
sac of skin and smooth muscle that houses the testes and keeps them
at the proper temp for spermatogenesis contain . nerves and blood vessels .
contract → closer to
body Relax → move
away
Tteessttees Gonads
:
, produce sperm and testosterone
-
←
Internal structures : epididymis ,
Vas deferens ,
ejaculatory
ducts , urethra , seminal vescicies ,
prostate gland , and bvlbovrethral glands .
Epididymis ; stores sperm as it matures
through NÉE to
egjaaevviaalt-oorryyddwe.tt#nnaaEssieeess
mature sperm moves from epididymis
fluids and D
:
ejaculatory
secrete alkaline with proteins mucus into
fluid
BWssttaalt-ee.gg#nndd :
secretes a Milky white with proteins / enzymes semen
BBHbboowrreetthhrraaikeowwppeerrsggiaannddD-e.se Crete fluid into urethra to neutralize
acidity
Hormones :
¥8111
iicdeesslt-immwiaattanng.gs hhoorrmmoonnee; stimulates spermatogenesis
11W #
einniztnngg ttloorrmmoonnee; stimulates testosterone production
Testosterone; responsible for male characteristics
tubules
sperm production begins seminiferous
=
