2.1 A matter of the heart

• Biologie
• Middelbare school
• vwo
• Leerjaar 2

Why do we need to breath?

1. To take in oxygen for cellular respiration
2. To take carbon dioxide in for cellular respiration

In diffusion a substance moves from ...

1. a high to a low concentration
2. a low to a high concentration

What happens in the Alveoli?

1. Oxygen flows from a high to a low concentration into the bloodstream
2. Carbon dioxide flows from a high to a low concentration into the bloodstream
3. Carbon dioxide flows from a low to a high concentration out of the bloodstream
4. Oxygen flows from a high to a low concentration out of the bloodstream

Blood flows to and from the alveoli.
What is typical of blood flowing TOWARDS the alveoli?

1. Contains a lot of oxygen
2. Contains a lot of carbon dioxide
3. Contains a lot of oxygen and carbon dioxide
4. Contains low amounts of oxygen and carbon dioxide

What is the function of the heart?

2.1 A matter of the heart

The circulatory system

The heart

Left and right

• You look from your own perspective

The chambers

• Four chambers
• Two atria (plural) at the top (atrium singular)
• Right atrium (RA) and left atrium (LA)
• Two ventricles at the bottom 
• Right ventricle (RV) and left ventricle (LV)

Heart valves

• Four valves
• Tricuspid valve between RA and RV
• Bicuspid (mitral) valve between LA and LV
• Pulmonary valve in pulmonary artery
• Aortic valve in aorta

Bloodvessels connected to the heart

• Aorta
• Pulmonary artery
• Pulmonary vein
• Superior Vena Cava
• Superior means 'upper' in Latin
• Inferior Vena Cava
• Inferior means 'lower' in Latin

How many chambers does the heart have? Type a number.

What number is the Left Atrium?

1. 6
2. 7
3. 8
4. 9

How many heart valves does the heart have? Type a number.

What number is the Tricuspid valve?

1. 4
2. 5
3. 11
4. 12

What number is the Pulmonary Artery?

1. 1
2. 2
3. 3
4. 10

What does the Latin word 'inferior' mean?

What number is the Aortic valve?

1. 4
2. 5
3. 11
4. 12

What number is the Superior Vena Cava?

1. 1
2. 2
3. 3
4. 10

And now..

Finish the exercises of chapter 2.1:  exercise 1 to 14, skip 11

Homework for Tuesday: study 2.1 + do exercises 2.1: 1 to 14 (skip 11)