1. BLOOD AND
THE HEART

2. 1.
RED BLOOD CELLS
What are they and what do they
do?

3. RED BLOOD CELLS
○ Made in bone marrow
○ Lack a nucleus
○ Have haemoglobin
○ take oxygen from the lungs
○ deliver oxygen to cells

4. 2.
WHITE
BLOOD
CELLS
What are they and what do they
do?

5. WHITE BLOOD CELLS
○ Made in bone marrow
○ Make up our immune system
○ Seek and destroy foreign bodies (virus,
“bad” bacteria, parasites)
○ Are bigger than red blood cells
○ Are different types to perform different jobs

6. 3.
PLATELETS
What are they and what do they
do?

7. PLATELETS
○ Made in bone marrow
○ Involved in injury
○ Plug, clot, and assist in repair of damaged
blood vessels
○ Send chemical signals to attract more
platelets

8. WHAT TO DO NOW
Answer
Chapter 4.5
Understanding and
Inquiring
Questions 2 and 4
Draw
A cartoon of a red blood
cell, white blood cell,
and platelet with a
speech bubble telling
their main job.
Think and Discuss
What would happen if
your red blood cells
could not carry enough
oxygen around the
body?

9. 4.
SECTIONS OF THE
HEART
What are they and where do they
lead?

10. RIGHT
ATRIUM
RIGHT
VENTRICLE
LEFT
VENTRICLE
LEFT
ATRIUM

11. 5.
JOB OF THE
HEART
What does it do for the body?

12. NOTICE THE ARROWS?
This is the direction
that blood flows into
and out of the heart.

13. 6.
WHERE THE
CIRCULATORY
SYSTEM FITS

14. EVERYWHERE