Your heartbeat is also being brought over through the arteries.
Blood flows very quickly here.
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Capillaries
Capillaries are very thin; it's walls are only 1 cell thick. This makes transport of O2 and CO2 easier. There is always a capillary nearby a living cell.
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Veins
Blood vessels that are thinner than the arteries. Inside the veins are valves that make sure blood doesn't flow back down because blood pressure is so low.
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Blood pressure in blood vessels
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Homework for next lesson
You can start working on exercise 1, 2 and 10. If you are finished early with them you can make the other exercises as well. But that won't be homework.
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Welcome!
Explanation about paragraph 3.2 (page 184)
Game
Homework
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What are we going to learn today?
Today we will learn:
Which blood vessels there are.
How they flow through our body.
What the names of our blood vessels are.
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Double circulatory system
Our circulatory system is a double looped system; per round trip through the body it passes the heart twice.
Pulmonary circulation: From the heart to the lungs and back.
Systemic circulation: From the heart to all your organs and back.
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Blood vessels of human
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Game
In teams, show the route a red blood cell takes throughout the body...
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Game
In teams, show the route a red blood cell takes throughout the body...
From your legs to your intestines.
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Game
In teams, show the route a red blood cell takes throughout the body...
From your liver to your kidneys.
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Homework for next lesson
For next lesson, you need to have the exercises of paragraph 3.2 finished.
Lesduur is: 45 min
