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Circulatory System - Grade 9
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STRUCTURE AND FUNCTION:
CIRCULATORY SYSTEMJourney Into a Man’s Heart
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
What makes your heart beats fast?
What do you know about your Heart?
How do you take care of your Heart?
LABORATORY ACTIVITY 1 – PULSE RATE CHECK
Standing
Walking
Jogging in
PlacePulse Rate
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?
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
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
Life
Circulatory
System
Body’s transport System
What is CIRCULA
TION?
Movement of the blood
Pumping action of heartDistribute nutrients
Remove waste
Cardiovascular
“Cardio” = Heart
“Vascular” = Blood Vessels
What is the function of BLOOD VESSELS?
What are the three types of BLOOD VESSELS?
Capillaries
Vein Artery
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?
Closed Transport System
Open Transport System
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
Structure of Blood Vessels
[1] [2] [3]
THE HEARTThe most
“hardworking” organ
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?
BLOOD
45%55
%
Blood CompositionBlood Cells Blood Plasma
45%
1%
54%
Composition of Blood CellsRed Blood CellsWhite Blood Cells + Blood PlateletsPlasma
92%
7% 1%
Composition of Blood PlasmaWater Proteins Other Substances
RED BLOOD CELLS [ERYTHROCYTES][biconcav
e][no
nucleus][unable to
repair]
[120 days body][10 days blood]
[Hemoglobin
red][carry
O2]
WHITE BLOOD CELLS [LEUKOCYTES]
{larger than
RBC}{lymphocytes
antibodies}{lymph
nodes}{act against foreign
substances}
BLOOD PLATELETS
Not cellsNo
nuclei
Fragments
Role: Clotting of Blood
Are you a humanitarian?
Are you willing to donate blood?
3-2-1 3 Things That You Remember
2 Things That You Don’t Understand
1 Thing That You Want to Share