lyhu *dooeodgghu...
TRANSCRIPT
Lym
phat
ic s
yste
mD
iges
tive
syst
em
Dig
estiv
e sy
stem
Smal
l int
estin
e
Urin
ary
syst
em
Why
hum
ans
cann
ot d
rink
seaw
ater
?
Rep
rodu
ctiv
e sy
stem
Res
pira
tory
sys
tem
•Ex
tern
al re
spira
tion:
bet
wee
n th
e bl
ood
and
the
alve
oli
•In
tern
al re
spira
tion:
bet
wee
n th
e bl
ood
and
the
extra
cellu
lar f
luid
sur
roun
ding
the
body
’s
cells
Pers
pira
tion In
tern
alEx
tern
al
Ner
vous
sys
tem
•C
entra
l ner
vous
sys
tem
: Br
ain
and
spin
al e
nclo
sed
by b
ones
•Pe
riphe
ral n
ervo
us s
yste
m:
not e
nclo
sed
12 p
airs
cra
nial
31 p
airs
spi
nal
•Af
fere
nt (s
enso
ry) n
euro
ns•
Effe
rent
(mot
or) n
euro
ns
-So
me
axon
ssu
rroun
ded
bysh
eath
sof
mye
lin-
Den
drite
s:re
ceiv
ing
end
-N
odes
ofR
anvi
er:
actio
npo
tent
ial
tom
ove
rapi
dly
Brai
nBr
ain
Skel
etal
sys
tem
Skel
etal
sy
stem
Skel
etal
sy
stem
Skel
etal
sy
stem
-206
bon
es
Rib
Spin
al c
olum
nM
uscu
lar s
yste
m
Hom
eost
asis
-Con
stan
tint
erna
lenv
ironm
ent
-i.e
.bo
dyte
mpe
ratu
re,
bloo
dpr
essu
re,
brea
thin
gra
te,a
ndhe
artr
ate
•Rec
epto
r:se
nsin
gco
mpo
nent
that
mon
itors
and
resp
onds
toch
ange
sin
the
envi
ronm
ent.
•Whe
nth
ere
cept
orse
nses
ast
imul
us,
itse
nds
info
rmat
ion
toa
cont
rol
cent
er(in
tegr
ator
),th
eco
mpo
nent
that
sets
the
rang
eat
whi
cha
varia
ble
ism
aint
aine
d.Th
eco
ntro
lce
nter
dete
rmin
esan
appr
opria
teac
tion
base
don
the
info
rmat
ion
itre
ceiv
es.
•Effe
ctor
:pro
vide
sth
eco
ntro
lcen
ter
resp
onse
toth
est
imul
us.T
here
sult
ofth
atre
spon
sefe
eds
back
toth
ere
cept
or,e
ither
enha
ncin
git
with
posi
tive
feed
back
orde
pres
sing
itw
ithne
gativ
efe
edba
ck.
Hom
eost
asis
-Glu
core
gula
tion:
mai
nten
ance
ofst
eady
leve
lsof
gluc
ose
inth
ebo
dy
-Osm
oreg
ulat
ion:
activ
ere
gula
tion
ofth
eos
mot
icpr
essu
reof
bodi
lyflu
ids
tom
aint
ain
the
hom
eost
asis
ofth
ebo
dy's
wat
erco
nten
t;th
atis
itke
eps
the
body
'sflu
ids
from
beco
min
gto
odi
lute
orto
oco
ncen
trate
d.
-The
rmor
egul
atio
n:hy
perth
erm
iavs
.hyp
othe
rmia
endo
ther
ms
vs.e
ctot
herm
sIn
hotc
ondi
tions
:-S
wea
tgla
nds
secr
ete
swea
t.-H
airs
liedo
wn
/blo
odca
pilla
ries
dila
te.
Inco
ldco
nditi
ons:
-Sw
eats
tops
bein
gpr
oduc
ed.
-Hai
rfol
licle
sup
right
/blo
odca
pilla
ries
shrin
k/m
uscl
essh
iver
.
Hom
eost
asis
Hom
eost
asis