Quiz on the Respiratory System

What is the primary function of breathing?

• To produce sound

• To filter air

• To regulate temperature

• To preserve life

Where does air normally enter the respiratory system?

• Through the nose

• Through the mouth

• Through the trachea

• Through the larynx

What structure serves as a common pathway for food and air?

• Bronchi

• Pharynx

• Trachea

• Larynx

What are the tiny air sacs in the lungs called?

• Bronchioles

• Alveoli

• Capillaries

• Adenoids

How many alveoli are estimated to be in the lungs?

• 700,000

• 70,000,000

• 700,000,000

• 7,000,000,000

What is the role of hemoglobin in the respiratory system?

• To produce mucus

• To absorb carbon dioxide

• To carry oxygen

• To filter air

What separates the thoracic cavity from the abdominal cavity?

• Lungs

• Diaphragm

• Pleura

• Mediastinum

How many lobes does the right lung have?

• Three

• Two

• Four

• Five

What is the weight of the lungs in an adult male approximately?

• 1,500 grams

• 1,350 grams

• 1,200 grams

• 1,000 grams

What is the vital capacity of the lungs in adult females?

• 3 - 3.5 liters

• 2 - 2.5 liters

• 4 - 4.5 liters

• 5 - 5.5 liters