YR2-CH5&6-LSN2-SHB

• Biologie
• Middelbare school
• havo, vwo
• Leerjaar 2

TODAY- LESSON 2:

blood

arteries and veins

heart

Do you want to take a break?

1. Yes
2. No

Vaccination against corona disease stopped

Why did they stop
with this vaccin?

Small risk of blood clotting

After this lessen

You can explain why blood 

clotting is a dangerous side

effect of a vaccin.

After this lessen you...

•... know which cells blood you have and what their function is.

•... know which type of veins we have and the differences between them.

•... can describe the blood circulation and you can indicate where the oxygen-rich and oxygen-poor blood is.

• (... can describe the different parts of the heart.)

Blood

Red blood cells

contain: 

• haemoglobin 
  

transport of:

• oxygen (oxyhaemoglobin)
• carbondioxide (haemoglobin)

Why do we need oxygen?

1. For digestion.
2. For respiration.
3. We don't need it.
4. For tasting.

Types of respiration:

Aerobic respiration

Anaerobic 

respiration

with oxygen

without oxygen

less energy

more energy

gives carbon dioxide 

results in lactic acid

mitochondria

cytoplasm

all of glucose used

glucose not completely used

How do we get oxygen?

1. In our intestine.
2. Through our skin.
3. In our lungs.
4. In our eyes.

Blood

White blood cells

several types of white blood cells:

• lymphocytes       

       make antibodies

       help to get immune

• phagocytes  

       are cell eaters 

White blood cells

Which game is based on this?

White blood cells

Blood

Platelets

small fragments of cells

help to clot blood

• changes fibrinogen to fibrin

                                                             ->

Blood clotting is used when your are bleeding

Where is your blood?

blood vessels

• circulatory system
• big and small blood vessels
• veins and arteries

-> left = right and right = left 

Where is your blood?

blood with oxygen

blood with carbon dioxide

respiration

What if blood clots are formed inside your veins or arteries....

what will happen???

Types of respiration:

glucose and oxygen can not reach the cells 

-> no respiration is possible 

X

Vaccination against corona disease stopped

What if blood clots are formed inside your veins or arteries....

what will happen???

What will happen if there is a blood clot in your toe?

1. Your heart will stop beating.
2. It will block the veins and arteries to provide oxygen to your toe.
3. You will get a headache.
4. You will get a bruise.

What will happen if there is a blood clot in
your vital organs?
(brain, lungs, heart,...)

1. You will get itchy.
2. You will get a bruise.
3. Your vital organs can fail, resulting in death.
4. You will get nauseous.

Is it wise to stop vaccinating?

Circulatory system...

complex system all over your body:

• heart
  
• veins
  
• arteries
  
• capillaires
  

Circulatory system... simplyfied

complex system:

• heart = pump
  

       -> pushes blood through the body 

• veins = tubes to the heart
  
• arteries = tubes from the heart
  
• capillaries = small tubes
  

Circulatory system... simplyfied

complex system:

• heart = pump 

       -> pushes blood through the body

• veins = tubes to the heart
  
• arteries = tubes from the heart
  

                         -> can pulse 

• capillaries = small tubes
  

Circulatory system... simplyfied

What do we miss in this system?? 

Circulatory system... simplified

What do we miss in this system?? 

The lungs!! 

Next week more about the long!

Circulatory system... simplified

2 parts:

• left: lungs -> heart -> body

       oxyhaemoglobin 

       oxygen transport

• right: body -> heart -> lungs

       haemoglobin

       carbondioxide transport

Circulatory system...

Problems:

arteries -> blood pressure

                  -> may not reach the toes 

veins -> blood may stream back

Circulatory system... simplified

arteries pulse 

• to help blood flow through the body

veins

• contain valves to avoid 

       flowing backwards of the blood

heart

• valves 

Circulatory system... complex

1. Carotid vein
   
2. Pulmonary artery
   
3.  Superior vena cava
   
4. Inferior vena cava
   
5. Hepatic vein
   
6. Hepatic portal vein
   
7. Renal vein
   

8. Femoral vein
9. Carotid artery
10. Pulmonary vein
11. Aorta
12. Mesenteric artery
13. Renal artery
14. Femoral artery

6,5,4,2,10,9

What route does paracetamol take 

before it reaches the brain?

1. Carotid vein
   
2. Pulmonary artery
   
3.  Superior vena cava
   
4. Inferior vena cava
   
5. Hepatic vein
   
6. Hepatic portal vein
   
7. Renal vein
   

8. Femoral vein
9. Carotid artery
10. Pulmonary vein
11. Aorta
12. Mesenteric artery
13. Renal artery
14. Femoral artery

6,5,4,2,10,9

What route does paracetamol take before it reaches the brain?

1. 1,2,3,4,5,6,7,8
2. 4,3,2,1,9,10
3. 6,5,3,2,1,9,10,11,12
4. 6,5,4,2,10,9

What is the diastolic pressure?

What is the systolic pressure?

What is a healthy blood pressure?

Why is a high blood pressure dangerous?

Why is a low blood pressure dangerous?

Homework for lesson 3:

Complete the hw for lesson 3 to the correct level and upload this to classroom.