The Respiratory System

What is the chemical gas element essential for respiration?

• Oxygen
• Carbon dioxide

What is the tube that carries air to the lungs?

• Trachea
• Oesophagus

What is the flexible connective tissue found in the respiratory system that keeps the trachea open?

• Cartilage
• Bone

What are the two main branches of the trachea that lead to the lungs?

• Bronchi
• Alveoli

What are the tiny air sacs in the lungs where gas exchange occurs?

• Alveoli
• Ciliated epithelial cells

What are the small blood vessels that carry oxygen away from the alveoli?

• Capillaries
• Veins

What is the fluid that circulates in the body, transporting oxygen and nutrients?

• Blood
• Brine

Name the part of the respiratory system that is labelled

a

Trachea

Lung

Diaphragm

Bronchi

Name the part of the respiratory system that is labelled

a

Bronchi

Diaphragm

Lung

Trachea

Name the part of the respiratory system that is labelled

c

Lung

Bronchi

Trachea