3.3 The heart diy

3.3 The heart
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Slide 1: Slide
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This lesson contains 20 slides, with interactive quizzes, text slides and 1 video.

time-iconLesson duration is: 30 min

Items in this lesson

3.3 The heart

Slide 1 - Slide

1. Read everything!

2.. Make notes!

4. Write down questions you have for me!


Slide 2 - Slide

Location of the heart

Slide 3 - Slide

The heart
-The heart is a double pump. Both sides pump blood into different directions.

-right side pumps oxygen-poor
  blood.

-left side pumps oxygen-rich 
  blood.

-Left and right are the other way around. You look at it from your own bodies perspective.
Right side
Left side

Slide 4 - Slide

When is blood 'Oxygenpoor' ?
A
when the concentration oxygen is low
B
when the concentration oxygen is high

Slide 5 - Quiz

Structure of the heart
The heart is a hollow muscle.

Coronary arteries (red arteries) supply Oxygen-rich blood + nutrients to the heart.

Coronary veins (blue veins) carry Carbon dioxide + waste products away from the heart. 

Slide 6 - Slide

The heart has four chambers:
- Left atrium
- Right atrium
- Left ventricle
- Right ventricle

Blood always enters the heart through the atria.

Septum: a wall separating the left and right side of the heart.
Septum

Slide 7 - Slide

How many chambers does the heart have?
A
2
B
4
C
6
D
8

Slide 8 - Quiz

Bloodflow
*Superior vena cava: Oxygen-poor blood from head + arms to right atrium

*Inferior vena cava: Oxygen-poor blood from torso + legs to right atrium

*Pulmonary artery: Oxygen-poor blood from heart to the lungs.

*Pulmonary veins: Oxygen-rich blood from lungs to left atrium 

*Aorta: Pumps Oxygen-rich blood to rest of the body



Slide 9 - Slide

Slide 10 - Slide

Which artery brings blood to the heart?
A
Aorta
B
Coronary arteries
C
Coronary veins
D
Pulmonary artery

Slide 11 - Quiz

The heart receives oxygen rich blood from the ...
A
Pulmonary veins
B
Pulmonary arteries
C
Coronary arteries/veins
D
Aorta

Slide 12 - Quiz

The heart pumps oxygen rich blood into the?
A
Superior vena cava
B
Pulmonary arteries
C
Aorta
D
Aorta and pulmonary arteries

Slide 13 - Quiz

atrioventricular valves
*the atria and the  ventricles areseparated by atrioventricular valves.

*Semilunar valves keep blood from flowing back into ventricles.

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

Slide 14 - Slide

When blood flows back to the heart where does it go first?
A
Into the valves
B
Into the atria
C
Into the ventricles
D
Into the septum

Slide 15 - Quiz

Which part of the circulatory system prevents blood from flowing back?
A
Veins
B
Arteries
C
Valves
D
Atria

Slide 16 - Quiz

cardiac cycle
On average, an adult’s heart muscle contracts seventy times a minute. That is what we call ‘a heart rate of 70’
The way the heart works is made up of three phases:

1.  atria contract, blood flows into  ventricles (ventricles relaxed)

2.  ventricles contract, blood flows into aorta and pulmonary 
   artery (atria relaxed).

3. Heart relaxes, blood flows into atria.


Slide 17 - Slide

Slide 18 - Video

Slide 19 - Link

Now you try!
Read 3.3 the heart
make ex. 1, 2, 3, 5, 7

done?
Make the test yourself of 3.3

Slide 20 - Slide