, 3 7 2 TRANSPORT IN
.
.
ANIMALS
Need for transpor
se
histt
·
metabolic rate-large multicellular
organisms ↑
have metabolic rate
.
↳ diffusion alone enough
isn't
·
SA : Vol-in larger organisms diffusion ,
would
occur too slowly But , single-alled organisms
.
have a large SA : Vol because the diffusion
path is so short
circulatory
used to
transport normous 1)
systems are
systems
circulatory
- enzymes from a gland to other parts of the
body
, it is also needed to dispose of waste
·
products etc ...
when the
heart relaxes the
pumps
,
heart naemolymph blood
↑
naemolymph through issucked backwi by
short vessels these pores
↳ into
L
& Yish
naemocoel -locust
Blood is fully
-
enclosed <
withi blood
vessels
-
in the
In the capiaries S
naemocal
, substances
naemolymph diffuse his
&
-
directly out of the
bathes blood vito
organs aus
tissues So
diffusion of
substances can occur
.
.
ANIMALS
Need for transpor
se
histt
·
metabolic rate-large multicellular
organisms ↑
have metabolic rate
.
↳ diffusion alone enough
isn't
·
SA : Vol-in larger organisms diffusion ,
would
occur too slowly But , single-alled organisms
.
have a large SA : Vol because the diffusion
path is so short
circulatory
used to
transport normous 1)
systems are
systems
circulatory
- enzymes from a gland to other parts of the
body
, it is also needed to dispose of waste
·
products etc ...
when the
heart relaxes the
pumps
,
heart naemolymph blood
↑
naemolymph through issucked backwi by
short vessels these pores
↳ into
L
& Yish
naemocoel -locust
Blood is fully
-
enclosed <
withi blood
vessels
-
in the
In the capiaries S
naemocal
, substances
naemolymph diffuse his
&
-
directly out of the
bathes blood vito
organs aus
tissues So
diffusion of
substances can occur
