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Y2_T3_LSN_3.3
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Science
Middelbare school
havo, vwo
Leerjaar 2
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Slide 1 - Diapositive
Topic 3
ORGANIZING THE WORLD
Slide 2 - Diapositive
Plan for today
Homework check
Explanation T3.3 The heart
Make homework
Slide 3 - Diapositive
Homework check:
check your hw answers
use a different colour
show your work when called
timer
15:00
Slide 4 - Diapositive
3.3 The Heart
Slide 5 - Diapositive
Learning goals
I can....
describe how the electrical signal travels through the heart and causes the three phases of the cardiac cycle.
describe how blood pressure is created by the heart.
follow the path of the blood through the circulatory system.
name the arteries and veins based on the organs they are connected to.
describe the role of the valves in the heart and how they create the heart tones.
describe how blockages in the circulatory system can cause major problems for the body.
Slide 6 - Diapositive
Key words
Heart
Atrium
Ventricles
Portal vein
Coronary Arteries
Clots
Stroke
Heart attack
Slide 7 - Diapositive
Aorta
pulmonary artery
pulmonary vein
vena cava
right atrium
right ventricle
left atrium
left ventricle
tricuspid valve
aortic valve
mitral valve
pulmonary valve
septum
apex
Slide 8 - Question de remorquage
The Phases of the cardiac
cycle
Atria contract
→ first peak, before the large peak
Pushes blood into the ventricles
Ventricles contract
→ large peak
Pushes blood out of the heart
Rest
→ last peak, after the large peak
Muscle relaxes, blood flows into the atria
Slide 9 - Diapositive
What controls it.
Nerve cells in the right atrium produce electrical signals
Signal reaches both atria → contract
Signal runs down the wall and up the sides → ventricles contract → highest blood pressure
Moment without signal → rest → lowest blood pressure
Slide 10 - Diapositive
Slide 11 - Vidéo
Names of blood vessels
Arteries
:
named after the organ they go to
Veins
:
named after the organ they come from
Special mention: for the
portal vein
.
Goes from the intestine to the liver.
(Liver filters the blood)
Slide 12 - Diapositive
Problems with the heart
Clots form and block the vessel
In the coronary artery → heart attack
In the brain → stroke
Slide 13 - Diapositive
Slide 14 - Vidéo
Homework
Study the glossary of 3.3
Complete the exercises of 3.3 (p. 126-133)
Prepare chickenheart experiment in labjournal
Slide 15 - Diapositive
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