Review 4.5 - 4.6: Respiratory System

Which of the following is part of the upper respiratory tract?

• Lungs

• Bronchi

• Sinuses

• Bronchioles

Which part of the respiratory system is known as the voice box?

• Pharynx

• Larynx

• Trachea

• Diaphragm

What is the role of the diaphragm in the respiratory system?

• It is a tube leading to the lungs.

• It is the voice box.

• It separates the thoracic and abdominal cavities.

• It filters air entering the nasal cavity.

What is the primary function of the nasal cavity in the upper respiratory tract?

• Filters, warms, and moistens incoming air

• Produces red blood cells

• Transports oxygen to the bloodstream

• Regulates blood pressure

How do the paranasal sinuses help fight infection?

• By producing white blood cells

• By capturing pathogens in mucus

• By increasing body temperature

• By producing antibodies

Which structures does the pharynx connect?

• Nasal cavity to larynx and oral cavity to esophagus

• Nasal cavity to trachea and oral cavity to stomach

• Nasal cavity to esophagus and oral cavity to larynx

• Nasal cavity to lungs and oral cavity to intestines

What is the primary function of the larynx in the lower respiratory tract?

• Digestion of food

• Voice production

• Absorption of nutrients

• Circulation of blood

What structure is pushed down to block the opening to the larynx and trachea when swallowing?

• Pharynx

• Epiglottis

• Esophagus

• Tongue

What is the primary function of the trachea in the lower respiratory tract?

• To filter air entering the lungs

• To connect the larynx to the bronchi

• To exchange oxygen and carbon dioxide

• To produce vocal sounds

What is the primary function of the trachea in the respiratory system?

• To exchange oxygen and carbon dioxide

• To clean, warm, and moisten incoming air

• To pump blood throughout the body

• To digest food