YR2-CH5&6-LSN4

HAVE READY:
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KERBOODLE PAGE 67-71
your homework FOR TODAY
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BiologieMiddelbare schoolvwoLeerjaar 2

Cette leçon contient 28 diapositives, avec quiz interactifs et diapositives de texte.

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HAVE READY:
GOOGLE CLASSROOM
KERBOODLE PAGE 67-71
your homework FOR TODAY

Slide 1 - Diapositive

TODAY:
- discuss difficult hw assignments
- discuss notes for today
- work on in class assignments.

Slide 2 - Diapositive

CLASS ASSIGNMENTS LSN 3:
-  Complete the exercises on tb pages 78 and 79

timer
7:00
ANSWER SHEET IS ON CLASSROOM, CHECK & DISCUSS THE ANSWERS

Slide 3 - Diapositive

ANY QUESTIONS ABOUT THE HW ASSIGNMENTS:

Slide 4 - Question ouverte

NOTES HW FOR LSN 4:
- did you understand all the learning goals?
- did you understand all the key words?
- do you have any questions?
timer
5:00

Slide 5 - Diapositive

ANY QUESTIONS ABOUT THE NOTES:

Slide 6 - Question ouverte

The heart 
- is a double pump
 - left side pumps oxygen rich
    blood (red) towards your
    body
- right side pumps oxygen
   poor blood (blue) towards
   your lungs 

Slide 7 - Diapositive

left = right
Yes, in the picture the left side is blue - this indicates oxigen poor blood, but actually it is the right side of the heart
We always see the heart from the front, but we consider it our own heart.
When I raise my right hand, you will not say that it is my left hand...

Slide 8 - Diapositive

Slide 9 - Diapositive

The heart
- four chambers
- 2 atria
- 2 ventricles

Blood always enters the heart via an atrium

Slide 10 - Diapositive

Blood flow
Bloodflow in the heart is a 
one-way street.
It follows the direction of the arrows

Slide 11 - Diapositive

From which chamber of the heart does blood leave to go to the lungs?
A
Right ventricle
B
Right atrium
C
Left ventricle

Slide 12 - Quiz

Which chamber produces the highest pressure in the blood?
A
Right atrium
B
Left atrium
C
Left ventricle

Slide 13 - Quiz

How is it possible that blood only flows one way?
Because:
A
of the blood pressure
B
blood cells know how to flow
C
there are valves
D
how the heart contracts

Slide 14 - Quiz

Valves
Valves only open in one way,
just like a door, if you push from one side the door opens easily, but if you push from the other side you will push it even closer...

Slide 15 - Diapositive

one way valve
As you can see, a valve only opens in one direction

Slide 16 - 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 17 - Question de remorquage

Blood supply to the heart
The heart works really hard and needs a lot of glucose and oxygen for its respiration.
This is provided by the coronary arteries that run on the the outside of the heart.

Slide 18 - Diapositive

Blood vessels types
  • Arteries - carry blood away from the heart
  • Veins - Carry blood back to the heart
  • Capillaries - go to every cell in the body (oxygen and co2 exchange)

Slide 19 - Diapositive

Arteries
  • Elastic walls which stretch
  • They contract and bounce back to force the blood along ('Pulse')

Slide 20 - Diapositive

Veins
  • Are wider than arteries
  • Thinner walls
  • pressure is much lower
  • blood is squeezed along by your muscles 
  • Flow is helped by valves 

Slide 21 - Diapositive

Capillaries
  • Smallest blood vessels
  • Very thin walls
  • Large surface area

  • Easy for gas exchange

Slide 22 - Diapositive

Wall
Pressure
Speed
Valves
Artery

Vein

Capillary

One cell thick
thick, elastic
thin
high
high
low
low
high to low
high to low
yes
no
no

Slide 23 - Question de remorquage

Which statement is true?
A
In general, the circulatory system looks like this: Heart -> veins -> capillaries -> arteries -> heart
B
In general, the circulatory system looks like this: Heart -> arteries -> capillaries -> veins -> heart

Slide 24 - Quiz

Which blood vessel has a wall which is only 1 cell thick?
A
All of them
B
Arteries
C
Capillaries
D
Veins

Slide 25 - Quiz


A
1.artery 2. vein 3. capillary
B
1. capillary 2. artery 3. vein
C
1. vein 2. capillary 3 artery
D
all answers are wrong

Slide 26 - Quiz

Naming of the blood vessels
  • Arteries: organ it is going to + artery, for example pulmonary artery
  • Veins: organ it is coming from + vein, for example pulmonary vein
  • Capillaries: too many to name, just lung capillaries

Slide 27 - Diapositive

WHAT TO DO NOW:
- WORK ON THE IN CLASS ASSIGNMENTS FOR LESSON 4
- COMPLETE THESE FIRST
- STUDY FOR YOUR TESTWEEK!!

Slide 28 - Diapositive