circulatory system - 2 - blood circulation

• Biologie
• Middelbare school
• vwo
• Leerjaar 2

Blood circulation 

par 2

The heart

-The heart is a double pump

-left side pumps oxygen rich 

  blood into the systemic 

  circulation 

-right side pumps oxygen poor

  blood into the pulmonary 

  circulation

Circulation

-Red blood indicates blood 

  with a lot of oxygen

-Blue blood indicates blood 

  with a lot of carbondioxide

-(notice the way the blue blood

   goes: from your body 

   towards the heart)

Circulation

Pulmonary circulation

From the heart to the lungs

Systemic circulation

From the heart to every part of your body

Pulmonary circulation

To the lungs to pick up oxygen and drop of carbondioxide

Systemic circulation

To every part of your body to drop of oxygen and nutrients and pick up carbondioxide and other waste products

Coronary circulation

Blood circulation of the heart

-Arteries: towards the heart

  muscle

-Veins: away from the heart 

  muscle

b2: circulation

-Systemic circulation:

-brings oxygen and nutrients to body cells.

-Takes away waste products from body cells.

-Oxygen-rich blood is bright red, flows through left side.

b2: circulation

Humans have a double circulatory system: blood flows through heart 2 per lap/circuit.

b2: circulation

-Pulmonary circulation:

-Takes in oxygen from the lungs.

-Releases CO2 to lungs to breathe out.

-Oxygen-poor blood is dark red, flows through the right side of the heart.

A double circulatory system is more efficient for taking in oxygen. Explain why only birds and mammals have this system.

Humans do have a so called 'double circulatory system'. What does that mean?

Homework

study par 3,2

do ex 8 & 9