and the beat goes on…

And the beat goes on….IB Biology

Topic 6

STARTER: In pairs….label the diagram and annotate it to show the path that blood takes around it

Learning Objectives

Everyone should:• Define the key words associated with the myogenic

control of heartbeat

Most will:• Outline the cardiac cycle

Some will:• Explain how negative feedback is used to regulate heart

rate

Now let’s review the path of blood through the heart!

GROUP THOUGHT

Make sure you DEFINE the key terms on your handout!

STARTER: Group Activity

1. Cut out the cards on the handout

2. Put the cards into the correct order to show the cardiac cycle

Learning Outcomes –what have you achieved today?

Everyone should:• Define the key words associated with the myogenic

control of heartbeat

Most will:• Outline the cardiac cycle

Some will:• Explain how negative feedback is used to regulate heart

rate

The pathway followed by the wave of excitation

Now try the OUTLINE exercise on your handout INDIVIDUALLY!

INDIVIDUAL ACTIVITY: Can you complete the ANNOTATE exercise on your handout?

You MUST include the following:• Details of the 3 stages

of the cardiac cycle• The key terms from

your handout

You SHOULD try and include• The pathway followed

by the wave of excitation

You MIGHT• Want to try WITHOUT

notes!

HL – Pay special attention to the information here – we will meet it again in our HL Option E – The Brain topic

Now try the EXPLAIN exercise on your handout INDIVIDUALLY!