, Circulatory System
moving vital substances around body
·
·
Eg O2
:
,
CO2 ,
nutrients ,
waste
,
hormones
,
disease fighter)
Characteristics
·
Blood :
transports dissolved gases
,
nutrients ,
waste products around body
·
Blood Vessels :
in which blood flas around body
Heart :
pump blood around body
Values :
ensure blood flows in only I direction (veins have
Open Circulatory System
·
blood vessels pump blood at low
pressure from heart to haemocoel carith
Blood baths internal organs directly 'exchange of substances
inefficient (small animals
·
Eg :
arthropods ,
invertebrates
closed Circulatory System
·
Blood remains enclosed a circulates In a continuous network of tubes = blood vessels
Blood flows rapidly under high pressure (heat pumps)
·
effective system
·
·
Eg :
worms
,
vertebrates
Double Circulation
blood flows througha 2x per
lungs
full cycle (heart is 2 side
by side pumps
de-O2 blood to lungs from Reside of
Oz diffuses in
from RIS
into blood
returns CO2 is breathed
of >
-
pumped to to LIS of
lungs Oz blood to a from lmgs ,
then owl of
L-side to cells
·
provides blood to bodily tissue+
back to a
① pumps
returns to
heart in capillaries , nutrients + waste are exchanged
to cells
btw blood + cells gaseous exchange
↓
=
.
CO2 diffusesut
cells
·
pressure allows Tissue Fluid to form (plasma) =
O2 carried fast
moving vital substances around body
·
·
Eg O2
:
,
CO2 ,
nutrients ,
waste
,
hormones
,
disease fighter)
Characteristics
·
Blood :
transports dissolved gases
,
nutrients ,
waste products around body
·
Blood Vessels :
in which blood flas around body
Heart :
pump blood around body
Values :
ensure blood flows in only I direction (veins have
Open Circulatory System
·
blood vessels pump blood at low
pressure from heart to haemocoel carith
Blood baths internal organs directly 'exchange of substances
inefficient (small animals
·
Eg :
arthropods ,
invertebrates
closed Circulatory System
·
Blood remains enclosed a circulates In a continuous network of tubes = blood vessels
Blood flows rapidly under high pressure (heat pumps)
·
effective system
·
·
Eg :
worms
,
vertebrates
Double Circulation
blood flows througha 2x per
lungs
full cycle (heart is 2 side
by side pumps
de-O2 blood to lungs from Reside of
Oz diffuses in
from RIS
into blood
returns CO2 is breathed
of >
-
pumped to to LIS of
lungs Oz blood to a from lmgs ,
then owl of
L-side to cells
·
provides blood to bodily tissue+
back to a
① pumps
returns to
heart in capillaries , nutrients + waste are exchanged
to cells
btw blood + cells gaseous exchange
↓
=
.
CO2 diffusesut
cells
·
pressure allows Tissue Fluid to form (plasma) =
O2 carried fast
