Air and Oxygen Quiz

What percentage of oxygen does air contain?

• 21%

• 10%

• 30%

• 50%

Is the amount of oxygen in the air sufficient to meet the body's needs under normal conditions?

• Yes

• No

• Only during physical activity

• Only at high altitudes

What is the primary function of the respiratory system?

• To circulate blood throughout the body

• To bring oxygen into the lungs and remove carbon dioxide

• To digest food and absorb nutrients

• To control body temperature

What are the two processes involved in respiration?

• Digestion and absorption

• Inhalation (inspiration) and exhalation (expiration)

• Circulation and filtration

• Contraction and relaxation

What is the name of the structure that connects the nasal cavity to the larynx and is part of the respiratory system?

• Esophagus

• Pharynx

• Aorta

• Bronchiole

Which part of the respiratory system is responsible for the exchange of gases between the air and the blood?

• Trachea

• Bronchiole

• Alveolus

• Pharynx

What is the muscular structure that separates the chest cavity from the abdominal cavity and plays a key role in breathing?

• Heart

• Diaphragm

• Lungs

• Liver

Which of the following is not a part of the human respiratory system?

• Sinuses

• Pleura

• Diaphragm

• Pancreas

Which of the following are parts of the upper respiratory tract?

• Esophagus and Trachea

• Nose & Nasal Cavities, Pharynx, Larynx

• Bronchi and Lungs

• Diaphragm and Alveoli

Which of the following is NOT a part of the lower respiratory tract?

• Trachea

• Bronchi

• Lungs

• Alveoli