2.1. A matter of the heart - lesson 1

• Biologie
• Middelbare school
• vmbo t, mavo
• Leerjaar 2

LESSON 1

• 2.1. A matter of the heart
• Do your homework 

2.1. A matter of the heart

Our body has a transport system for bringing nutrients and oxygen to your cells and carrying away waste, like carbon dioxide.

How do we call that
transport system?

Which organs belong to
the circulatory system?

2.1. A matter of the heart

•  Our heart is a powerful organ that actually works as not one, but two pumps.

2.1. A matter of the heart

•  Our heart is a powerful organ that actually works as not one, but two pumps.
• The right-handed side of your heart pumps blood towards your lungs, while the left-hand side of your heart pumps blood to all other organs of the body.

Which side of your heart
has a thicker wall of cardiac
muscle tissue?

2.1. A matter of the heart

• Your heart has four compartments called chambers (kamers).

2.1. A matter of the heart

• Your heart has four compartments called chambers (kamers).
• The two chambers are called the left atrium (linkerboezem) and the right atrium (rechterboezem).

2.1. A matter of the heart

• Your heart has four compartments called chambers (kamers).
• The two chambers are called the left atrium (linkerboezem) and the right atrium (rechterboezem).
• The two lower chambers are called the left ventricle (linkerkamer) and the right ventricle (rechterkamer).

2.1. A matter of the heart

• Your heart beats by contracting and relaxing its cardiac muscle tissue.

2.1. A matter of the heart

• Your heart beats by contracting and relaxing its cardiac muscle tissue.
• During one heartbeat, first both atria contract at the same time.

2.1. A matter of the heart

• Your heart beats by contracting and relaxing its cardiac muscle tissue.
• During one heartbeat, first both atria contract at the same time.
• Then when the atria relax, both ventricles contract at the same time.

2.1. A matter of the heart

• Your heart beats by contracting and relaxing its cardiac muscle tissue.
• During one heartbeat, first both atria contract at the same time.
• Then when the atria relax, both ventricles contract at the same time.
• This repeats itself over and over throughout your lifetime. 

HOMEWORK

Tuesday  8 February

Complete question 1 on page 3 in your workbook