139
Coordination }
.
Response
°
nerve
-
139.1
.
Nervous
control
in
humans
-
◦
4
:/
impulse
an
4
=
electrical
/
signal
passes
along
neurones
( nerve cells )
Involuntary response ( reflex )
∅ brain in decision
making
-
connect
→
not
-
to others
-
↳
◦
coordinates
+
phoi no:p
Types of
regulates body
functions
dieiihoa
Ku
in
actions
until it's
that
to
rapid
automatic
+
basic
minimize
coordinate
↳
action
essential
→
-
of
aware
usually
◦
-
phair ✗ a.
stimuli
carried out
-
→
response
starts
you
w/
make
carry
your
a
out
brain
conscious
decision
action
survival
to
body
response of effectors
( muscles
Reflex
Voluntary
-
are
damage
+
•
+
glands )
Arc
neurone
connector
effector
JEFF
139.2
Sense
.
The
organs
eye
light
some
( bends )
"° "
"° "
enters
the
""
focuses
The
-
Pupil
m""
us
from not
Antagonistic
pupil
µ
retina
light onto
blind
spot
-
-
bright light
seeing objects
↳
muscle action
in
dim
light
I
radial
pupil
constricts
pupil
dilates
muscles
circular muscles
work
together
cones
-
detect
light intensity
-
detect
color
colors
carries
impulses
retina
meets
no
brain
to
optic
nerve
light receptors
brain
'
'
fills
in
Viewing
*
rods
9ᵗʰ
-
from
,
light
to
"
Reflex
retina
-
sensitive
of different
protects
-
light receptors
contains
refracts
=
fine
-
black
the
near
distant
and
focusing
hole
=
objects
accommodation
d-iéutiéi
-
→
1
contracts ,
1
diameter
↓
relaxes
-
diameter ↑
tuyényén
139.3
.
Hormones
tuyéngiép
Hormones
-
-
-
-
a
:
chemical substance
produced
carried
alters
a
gland
the
blood
by
by
µ
tuyén thu.ongtho.in
tuye-inti.ly
-
activity of ≥ 1 specific organs
-
secreted
effect
◦
*
part of
the
endocrine
'
system
in
.no?itie-I
↑
↑
up of
neuron es ,
:
type of message
transmission
brain
,
length of effect
spinal
vs
cord
very fast
speed
short
-
until
nerve
'
situations
breathing rate
=
↑ Oz
dilate / widen
[ blood glucose ]
4 impulse
:
flight
=
to muscles
taken
coz
↑
respiration
in
away
muscle cells
examples ?
Nervous
made
+
pupils
•
-
or
!
:
•
hé
fight
body is in danger
the
impulse stops
.
Hormonal
control
glands
chemical hormone
slower
longer
-
until hormone
is
broken down
Control of
B. 9.4
?i
bating
coin
of
maintenance
-
-
kept
↳
insE secreted by
work
a
to
internal conditions
cells
can
,
blood
pressure
,
side
by
-
-
pancreas
side
by
,
[ glucose ]
-
,
→
you
can
live
blood
glucose
too
feedback
-
'
,
glucose
insulin
function
negative
'
'
'
if not ?
controlled
[ H2O ]
limits
set
within
*
-
levels
internal environment
constant
-
glucose
Homeostasis
.
no
↳
blood
glycogen
→
.
'
.
level
blood
high
level
glucose
too
low
glucagon
-
Negative
Feedback
glycogen
↓
continuous
a
bringing
stay
→
.
or
fall
/ switched
on
cycle
levels
in
a
up
,
narrow
then down
range
-1Mhmr
normal
- -
-
-
-
-
-
→
'
-
rise
*
gkiiosé
'
called
'
normal
'
.
-
.
-
Temperature
◦
hypothalamus
the
↳
control
detects
to of
≈
blood
blood to
thermostat
receptors
running through
cold
when
-
shivering
↳
•
if
→
1-
°
7
pan,
or
µ
4
37°C
way
→
µ,
send
mg ,
,g,
4 impulses
,
along
nerves
-
,
creates
body
,
:
muscles
produce
+
saves
contract
heat
→
+
heat
relax
warms
blood
vasoconstriction
ya , ,
gang,
up
vñngduoiotcii
-
÷:*:::::÷::⇔⇔
sweating
:
droplets of sweat evaporate
→
The
skin
→
-
sensory
neuron es
hair
lies
flat
cools
lose
body
heat
.
turning
139.5
.
Tropic
responses
Investigating
tropic responses
plant growth
hormone
Phototropism
response
a
◦
•
where
parts of a plant grows
towards /
away from light
( the direction
source
light is coming
from )
Gravi tropism
◦
◦
response
a
where
parts of a plant grows
towards /
away from gravity
with
shoots
phototropism
=
chemical
,
+
gravi tropism
control
plant growth
of
Auxin
7
=
1
.
auxin
synthesized in
shoot
2.
3.
a
due to
a.
4.
→
a.
tip only
spreads through plant
gravity
+
light
,
unevenly distributed
stimulates cell elongation
is
@ shaded side