Organisation - heart and health

The ___________ is the basic unit of life

• organ
• cell
• atom
• tissue

Left ventricle

• 1

• 2

• 3

• 4

In the diagram, what is 11?

• Alveoli

• Trachea

• Lungs

• Bronchi

• Bronchioles

Why do arteries have very thick and elastic walls.

• The protect the blood inside.

• To prevent coronary heart disease,

• So substance like oxygen can't move through the walls.

• To withstand the large amount of pressure in the blood they carry.

The blood vessel that has valves at intervals...

• capillary

• artery

• vein

• none of the above

In the diagram, what is 9?

• Alveoli

• Trachea

• Lungs

• Bronchi

• Bronchioles

Which of the following is NOT a type of blood vessel?

• Artery

• Capillary

• Vein

• Ventricle

The upper chambers of the heart are ventricles.

• true

• false

Cancer is a disease of ______

• Uncontrolled cell growth

• The slowing of the nervous system

• Genetic destruction

• Reducing the immune system

Which of the following are the smallest blood vessels?

• artery

• vein

• venule

• capillary