Download Circulatory System Part 2 Powerpoint

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I can describe blood vessels.
I can describe blood vessel dilation.
I can describe blood vessel constriction.
I can explain what blood vessels do when my body temperature
gets high.
I can explain what blood vessels do when my body temperature
gets low.
I can name a structure veins have that arteries do not.
I can explain why veins have valves.
I can describe arteries.
I can describe arterioles.
I can describe veins.
I can describe venules.
I can describe capillaries.
I can explain the statement “The circulatory system is basically 2
loops.”
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Blood Vessels
Dilate
Constrict
Artery
Vein
Valve
Arteriole
Venule
Capillary
Pulmonary
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These are elastic!
They get bigger and
smaller…
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Vessels getting
bigger = dilating
Vessels getting
smaller = constricting
Your blood vessels get bigger (vasodilation). They move closer to the epidermis
and release heat. This cools you off!
Your blood vessels get smaller (vasoconstriction). They move farther away from the
epidermis and keep heat in. This warms you up!
Veins
Arteries
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Next page… what structure do veins
have that arteries do not?
Arteries - blood vessel
that leads blood away
from the heart
 Arterioles – arteries start
branching into smaller
vessels called arterioles
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Vein Blood
vessel that
leads
blood
towards
the heart
Venules –
veins start
branching
into smaller
vessels
called
venules
arterioles
Where arterioles turn in to venules
Smallest blood vessels
Only big enough for 1 erythrocyte
to get through at a time
 Diffusion of oxygen and carbon
dioxide occur here
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Your circulatory
system is basically 2
loops:
› Pulmonary Loop:
 This loop goes from
your heart to your
lungs and back to
your heart again
› Systemic Loop:
 The second loop goes
from your heart to
some place in the
body (muscle,
eyeball, big toe…)
and back to your
heart again
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5.
What do blood vessels do when a human
is cold?
What are blood vessels going to do to try
to get rid of heat when a person is too hot?
Which type of vessel takes blood from the
heart to the finger?
Which type of vessel takes blood from the
lung to the heart?
Where does diffusion of the oxygen and
carbon dioxide happen in the blood
vessel?
http://www.cleanvideosearch.com/media/
action/yt/watch?videoId=HNuPWdfjDoc
 http://biology.about.com/od/anatomy/ss/
capillary.htm
 http://www.cleanvideosearch.com/media/
action/yt/watch?videoId=CjNKbL_-cwA
 http://www.gettyimages.ca/detail/illustratio
n/the-blood-supply-of-the-head-and-neckroyalty-free-illustration/87376830
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