Lesson 4 : Blood pressure & diseases




Blood pressure
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Slide 1: Tekstslide
BiologieMiddelbare schoolvwoLeerjaar 2

In deze les zitten 15 slides, met interactieve quizzen, tekstslides en 2 videos.

time-iconLesduur is: 45 min

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Blood pressure

Slide 1 - Tekstslide

TODAY:
- Blood pressure
-Heart diseases

Slide 2 - Tekstslide

Pay attention to the video:
- What is diastolic pressure?
- What is systolic pressure?
- What is a healthy blood pressure?
- Why is it bad when it is too high or too low?

Slide 3 - Tekstslide

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Slide 4 - Video

What is the diastolic blood pressure?
A
The blood pressure when the heart muscles are relaxed
B
The blood pressure when the heart muscles are contracted

Slide 5 - Quizvraag

What is the systolic blood pressure?
A
The blood pressure when the heart muscles are relaxed
B
The blood pressure when the heart muscles are contracted

Slide 6 - Quizvraag

What is a healthy blood pressure?
A
120/80 mmHg
B
140/90 mmHg
C
80/40 mmHg
D
200/220 mmHg

Slide 7 - Quizvraag

Why is it bad if it is too high or too low?
A
it causes damage to blood vessels
B
It is doesn't really matter
C
You get really tired
D
You feel sick

Slide 8 - Quizvraag

2 sides of the heart work together
Diastole
-Heart muscles are relaxed
-Blood flows into the atria from the veins

Systole (atria or ventricles)
Heart muscles contract
1. Atria contract (DA...)
- blood forces into the ventricles 

2. Ventricles contract (DUM...)
- blood forced into the arteries 

Slide 9 - Tekstslide

heart attack
  • One or more bloodvessels around the heart muscle (coronary arteries) is blocked
  • Parts of the heart stop beating or start beating irregularly
  • Blockage = called thrombosis

Slide 10 - Tekstslide

Stroke
  • One or more bloodvessels to the brain are blocked.
  • Parts of the brain get starved of oxygen and can be damaged permanently.

Slide 11 - Tekstslide

Risk factors
-inherited genes
-age
-sex (men have a higher chance)
-eating fatty foods
-being over weight
-smoking
-taking little or no exercise

Slide 12 - Tekstslide

Slide 13 - Video

Da-dum-.......
Da:
  • The left and right atria contract
  • The left and right ventricles relax
  • The tricuspid and mitral valves open
  • The blood flows into the left and right ventricles
  • The pulmonary and aortic valves close (the sound DA)

Slide 14 - Tekstslide

Now read and do the exercises

Slide 15 - Tekstslide