I can describe blood vessels. I can describe blood vessel dilation. I can describe blood vessel...
-
Upload
earl-mcdaniel -
Category
Documents
-
view
294 -
download
0
Transcript of I can describe blood vessels. I can describe blood vessel dilation. I can describe blood vessel...
Part 2: Blood Vessels
Circulatory System
Learning Targets
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.”
Vocabulary
Blood Vessels Dilate Constrict Artery Vein Valve Arteriole Venule Capillary Pulmonary
Blood Vessels
These are elastic! They get bigger and smaller…
Vessels getting bigger = dilating
Vessels getting smaller = constricting
Activity:Blood vessels getting bigger is called dilating. Blood vessels getting smaller is called constricting.
Your blood vessels help you out when you are hot and when you are cold!
IF YOU
AR
E H
OT… Your blood vessels get bigger (vasodilation). They move closer to the epidermis
and release heat. This cools you off!
IF YOU
AR
E C
OLD
… Your blood vessels get smaller (vasoconstriction). They move farther away from the epidermis and keep heat in. This warms you up!
2 Ty
pes o
f Blo
od
Vessels
Vein
sA
rterie
s Next page… what structure do veins have that arteries do not?
What structure do veins have that arteries do not?
You will watch a video on valves in your veins. Then you will explain the purpose of those valves.
Coming Up…
http://www.cleanvideosearch.com/media/action/yt/watch?videoId=HNuPWdfjDoc
Open-ended…Explain the purpose of valves in our veins.
Arteries Arteries - blood vessel
that leads blood away from the heart
Arterioles – arteries start branching into smaller vessels called arterioles
Veins
Vein - Blood vessel that leads blood towards the heart
Venules – veins start branching into smaller vessels called venules arterioles
CA
PILLA
RIE
S
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
You will watch a video to review the 3 main types of blood vessels. Listen for any new information you haven’t heard or seen so far.
Coming Up…
http://www.cleanvideosearch.com/media/action/yt/watch?videoId=CjNKbL_-cwA
2 Loops 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
Quiz1. What do blood vessels do when a human
is cold?2. What are blood vessels going to do to try
to get rid of heat when a person is too hot?
3. Which type of vessel takes blood from the heart to the finger?
4. Which type of vessel takes blood from the lung to the heart?
5. Where does diffusion of the oxygen and carbon dioxide happen in the blood vessel?
I love creating interactive lessons that educators can use to inspire their students’ learning! I hope you found this lesson helpful in engaging all of your learners.
Thank You!Abby
Credits
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/illustration/the-blood-supply-of-the-head-and-neck-royalty-free-illustration/87376830