Respiratory System Quiz

What is the main muscle of respiration?

• Pectoralis minor

• Diaphragm

• Pectoralis major

• Trapezius

Breathing in is called:

• External expiration

• Internal inspiration

• Internal expiration

• External inspiration

Exchange of gases takes place between the pulmonary blood capillaries and which part of the respiratory system?

• Alveoli

• Bronchioles

• Bronchi

• Trachea

The lungs are enclosed by a pleural:

• Cavity

• Lining

• Mucus

• Membrane

Which blood vessel carries blood from the lungs to the heart?

• Aorta

• Pulmonary vein

• Superior vena cava

• Pulmonary artery

When the diaphragm muscle contracts, it:

• Lengthens and straightens

• Relaxes

• Decrease the space in the lungs

• Creates a dome shape

What is the technical name for the windpipe?

• Alveoli

• Trachea

• Epiglottis

• Pharynx

The ribs assist breathing:

Which of the following helps to prevent choking?

• Pharynx

• Tonsils

• Trachea

• Epiglottis

Which muscles contract to lift ribs up and out?

• Diaphragm

• Serratus anterior

• Intercostal

• Pectoralis major