Exploring the Respiratory System

What is the primary function of the respiratory system?

• To control body temperature

• To digest food

• To circulate blood

• To bring oxygen into the body

How many lungs does the human body have?

• One

• Four

• Three

• Two

Which side of the body has the smaller lung, and why?

• Left, to make room for the spleen

• Right, to make room for the stomach

• Left, to make room for the heart

• Right, to make room for the liver

What muscle helps you breathe by moving when you inhale and exhale?

• Biceps

• Diaphragm

• Stomach

• Heart

Where does the air go after it enters through the nose or mouth?

• Out of the body

• Directly to the lungs

• To the stomach

• Through the pharynx and trachea

What prevents food and liquids from entering the lungs?

• Trachea

• Epiglottis

• Bronchioles

• Esophagus

What process produces carbon dioxide in your cells?

• Diffusion

• Respiration

• Circulation

• Digestion

What is the correct term for the exchange of oxygen and carbon dioxide in the body?

• Digestion

• Circulation

• Respiration

• Filtration

What is the name of the tiny air sacs where gas exchange occurs?

• Capillaries

• Diaphragm

• Alveoli

• Bronchi

How many times do you probably breathe while watching this video?

• More than 200 times

• About 75-100 times

• About 50-60 times

• About 20-30 times

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