BS 1 - Blood

Today's lesson
Discussion of test ch2
Start ch3: the circulatory system
1. What is the circulatory system?


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Slide 1: Slide
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This lesson contains 19 slides, with interactive quizzes, text slides and 1 video.

Items in this lesson

Today's lesson
Discussion of test ch2
Start ch3: the circulatory system
1. What is the circulatory system?


Slide 1 - Slide

What does circulation mean? Ex. A teacher circulates the room answering the students questions.
A
To move around.
B
To move in a circle.
C
To move backwards.
D
To move up and down.

Slide 2 - Quiz

The circulatory system

A system of tubes that moves substances around your body. 

The heart muscle powers this movement.

Slide 3 - Slide

What moves around in your body via the circulatory system?
A
cells, tissues, organs
B
eyes, ears, stomach
C
blood, food, oxygen
D
blood, nutrients, oxygen, CO2

Slide 4 - Quiz

Blood - What comes to mind?

Slide 5 - Mind map

What do we know already?
  • Unit 1: Blood carries oxygen & CO2
  • Unit 2: Blood carries nutrients

Slide 6 - Slide

Worktime
Read 3.1 Blood
Make assignment 1 -4 and 6 - 9

Slide 7 - Slide

Blood
  • Function: Blood transports everything your body needs
  • Ex. heat, nutrients, oxygen, CO2, waste products
  • Blood contains:
  1. Plasma: plasma proteins (ex. fibrinogen), water, dissolved substances 
  2. Solids: red and white blood cells, platelets

Slide 8 - Slide

What is blood?

Slide 9 - Slide

Red blood cells
  • small round discs
  • no nucleus
  • red pigment: haemoglobin
  • Function: absorb and release oxygen

Slide 10 - Slide

White blood cells
Function: Destroy pathogens (bacteria) 
Do have a nucleus
No fixed shape
Can squeeze through openings

extra: Pus: Dead WBC and the bacteria they killed

Slide 11 - Slide

Platelets
  • Not cells 
  • broken parts of cells
  • Function: clotting 
Clotting inside blood vessels is called thrombosis

Slide 12 - Slide

Slide 13 - Video

What is the function of the red blood cell (RBC)?

Slide 14 - Open question

Why do we have white blood cells?
A
To protect us from suffocating
B
To protect us from bleeding out
C
To protect us from the cold
D
To protect us from pathogens

Slide 15 - Quiz

Recap - what was the lesson about?
1. The circulatory system
2. Blood and it's parts
         - red blood cells
         - blood plasma
         - white blood cells


Slide 16 - Slide

What did you learn today?

Slide 17 - Open question

What questions do you still have about blood?

Slide 18 - Open question

HW: Read 3.1 Blood
Do Qs 1 t/m 7

Slide 19 - Slide