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Cardiovascular system
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Direction of blood flow
Biology > Cardiovascular system
5 cards
Cards (17)
Arteries
Carry blood
away
from the heart
Do not have
valves
Have
thick
layers of
muscle
over walls
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Veins
Carry
blood
into the heart
Have
valves
to prevent
backflow
Have
thin walls
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Capillaries
Bring
nutrients
and
oxygen
to tissues
Remove
waste
Form
extensive
networks
Increase surface area (
bicca
disk)
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Red blood cells
Have no
nucleus
More room for
haemoglobin
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White blood cells
Defend against
disease
Include
phagocytes
and
lymphocytes
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Platelets
Clot blood
to
seal wounds
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Plasma
Liquid part of blood that transports
carbon dioxide
and circulates
heat
and soluble food
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Cardiovascular disease risk factors
High
blood pressure
Diabetes
Smoking
Obesity
Unhealthy
diet
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Cardiovascular disease treatments
Statins
(lower cholesterol)
Angioplasty
(unblock blood vessels)
Lifestyle
changes (improve diet, quit smoking/alcohol)
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Blood flows from the
right
side to the
left
side of the heart
Red blood cells have a
large
surface area and have a
disk
shape
The
biconcave
shape allows red blood cells to squeeze through
narrow
capillaries.
See all 17 cards