The Breathing System

What organ is most associated with the breathing system?

• Lungs

• Heart

• Kidneys

• Liver

What is another name for the voice-box?

• Trachea

• Oesophagus

• Bronchus

• Larynx

What keeps the windpipe open?

• Cartilage

• Bone

• Tendons

• Muscle

What are the tiny air-sacs where gas exchange takes place?

• Lungs

• Alveoli

• Bronchus

• Broncioli

The way gases move between the capillaries and alveoli is called...?

• Osmosis

• Diffusion

• Atmosphere

• Pressure

Tags

NGSS.HS-LS2-5

What is the muscle under the lungs called?

• Intercostal

• Diaphragm

• Bronchus

• Cardiac

Breathing involves 2 stages: inhalation and ______________?

Breathing rate is controlled by the concentration of ................... dissolved in blood?

• Oxygen

• Carbon dioxide

• Nitrogen

• Water vapour

The ribs move up and out while the diaphragm contracts. This active action causes.............?

• inhalation

• exhalation

• diffusion

The percentage of oxygen in exhaled air for a person at rest is

• 16%

• 21%