Save
...
Organisation
Animal Tissues, Organs and Organ Systems
Circulatory system
Save
Share
Learn
Content
Leaderboard
Learn
Cards (13)
Circulatory system
Transports
food
and
oxygen
around the body
Transports
waste
substances out of cells
Components of blood
Red
blood
cells
White
blood
cells
Platelets
Plasma
Red blood cells
- Produced in the bone
marrow.
Specialised to carry
oxygen
No
nucleus
to increase space for
oxygen
Biconcave
disc
shape
to increase
surface
area
Contain
haemoglobin
White blood cells
- Does has a nucleus & produced in bone marrow.
Fight infection and are part of the
immune
system
Can change shape to
engulf
pathogens
by
phagocytosis
Some produce
antibodies
and
antitoxins
Platelets
- broken off from large cells in the bone marrow.
Cell fragments important for blood clotting
Activate at injury sites to form clots
Plasma
The liquid in
blood
that carries all the
substances
Blood Clotting
A process that reduces
bleeding
when we are injured.
Haemoglobin
A
protein
that binds to
oxygen
in the
lungs
and releases it in
body
tissues.
oxygen
used for survival - to help
organisms grow
, reproduce and
turn food
into energy.
Blood
is made up of
45
% of
cells
and
55
% of
plasma.
Blood is a
tissue
and it's carried around the body in
blood vessels.
Blood's
functions includes:
Transporting
substances
Defence against
pathogens
Control of
body
temperature
Maintaining
pH
of
fluids.
Plasma transports:
red
blood
cells
,
white
blood
cells
,
platelets
,
nutrients
,
hormones
,
proteins
,
carbon
dioxide
,
urea
,
glucose
,
amino
acids
,
anti-bodies
,
anti-toxins