Respiratory pretest

What is the primary organ of the respiratory system?

• Heart

• Stomach

• Lungs

• Brain

What is the main function of the respiratory system?

• To circulate blood

• To exchange gases (oxygen and carbon dioxide)

• To digest food

• To produce hormones

What structure connects the throat to the lungs?

• Esophagus

• Diaphragm

• Nasal Cavity

• Trachea

What muscle helps expand the chest cavity for breathing?

• Diaphragm

• Biceps

• Pectoralis

• Quadriceps

What are the tiny air sacs in the lungs called?

• Bronchi

• Capillaries

• Alveoli

• Lobes

Through which part of the body does air enter the respiratory system?

• Mouth and Nose

• Ears

• Eyes

• Skin

What is the name of the tube that carries air to the lungs?

• Esophagus

• Trachea

• Bronchus

• Pharynx

What gas do we exhale?

• Oxygen

• Carbon Dioxide

• Nitrogen

• Helium

Which part of the respiratory system filters dust and particles from the air?

• Alveoli

• Trachea

• Nasal Cavity

• Lungs

What is the term for the process of breathing in?

• Exhalation

• Respiration

• Inhalation

• Precipitation