lesson 1 circulatory system - grade 9
DESCRIPTION
Circulatory System - Grade 9TRANSCRIPT
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STRUCTURE AND FUNCTION:
CIRCULATORY SYSTEMJourney Into a Man’s Heart
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K W H LWhat do I
know?
What do I want to
find out?
How can I find out
what I want to learn?
What did I learn?[at the
end of the lesson]
Skills I expect to
use
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What makes your heart beats fast?
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What do you know about your Heart?
How do you take care of your Heart?
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LABORATORY ACTIVITY 1 – PULSE RATE CHECK
Standing
Walking
Jogging in
PlacePulse Rate
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Guide Questions1.Do you have a normal heart rate?2. What is the possible cause of having an abnormal pulse rate?3. Why is exercise beneficial to you?4. Aside from exercise, how do you keep your heart healthy?
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How do the parts of the Circulatory System work
together?How do we take care of our
circulatory system?How is the organ system designed to perform its
function?
1 23
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What do cell of an organism need to carry
on life processes? What is
METABOLISM?
What do you call the waste products
of the cells?
F _ _ DO _ _ _ _ N
N _ _ _ _ _ _ _ S
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Life
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Circulatory
System
Body’s transport System
What is CIRCULA
TION?
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Movement of the blood
Pumping action of heartDistribute nutrients
Remove waste
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Cardiovascular
“Cardio” = Heart
“Vascular” = Blood Vessels
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What is the function of BLOOD VESSELS?
What are the three types of BLOOD VESSELS?
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Capillaries
Vein Artery
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Which blood vessel carry blood away from the heart? Which blood vessel brings blood back to the heart?
Which blood vessel carry blood from small artery to a small vein?
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Closed Transport System
Open Transport System
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WHAT IS THE DIFFERENCE?Closed
- Vertebrates and few invertebrates - Have heart and blood vessels - Does not fill body cavities - Blood kept in blood vessels - Heart pumps blood
Open - Invertebrates
- Do not have true heart or capillaries - Blood is pumped in hemocoel [cavity] - Blood + interstitial fluid = hemolymph
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Structure of Blood Vessels
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[1] [2] [3]
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THE HEARTThe most
“hardworking” organ
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What are the four chambers of the heart?
What are the four valves of the heart?
What are the five large blood vessels connected to the heart?
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BLOOD
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45%55
%
Blood CompositionBlood Cells Blood Plasma
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45%
1%
54%
Composition of Blood CellsRed Blood CellsWhite Blood Cells + Blood PlateletsPlasma
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92%
7% 1%
Composition of Blood PlasmaWater Proteins Other Substances
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RED BLOOD CELLS [ERYTHROCYTES][biconcav
e][no
nucleus][unable to
repair]
[120 days body][10 days blood]
[Hemoglobin
red][carry
O2]
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WHITE BLOOD CELLS [LEUKOCYTES]
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{larger than
RBC}{lymphocytes
antibodies}{lymph
nodes}{act against foreign
substances}
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BLOOD PLATELETS
Not cellsNo
nuclei
Fragments
Role: Clotting of Blood
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Are you a humanitarian?
Are you willing to donate blood?
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3-2-1 3 Things That You Remember
2 Things That You Don’t Understand
1 Thing That You Want to Share