Parts and Functions of the Respiratory System

Which of the following is the primary function of the respiratory system?

• • A) Circulating blood throughout the body

• • B) Breaking down food into nutrients

• • C) Exchanging gases between the body and the environment

• • D) Regulating body temperature

What is the correct flowchart to show the oxygen transport from the environment to the blood?

• nose -> pharynx -> larynx -> trachea -> bronchi -> bronchioles -> alveoli

• • nose -> larynx -> pharynx -> trachea -> bronchi -> bronchioles -> alveoli

• • nose -> pharynx -> larynx -> bronchi -> bronchioles -> trachea -> alveoli

• • nose -> larynx -> pharynx -> bronchi -> bronchioles -> trachea -> alveoli

The nasal cavity primarily functions to:

• • A) Pump air into the lungs

• • B) Filter, warm, and moisten the air before it enters the lungs

• • C) Store oxygen

• • D) Produce sound for speech

Which structure prevents food from entering the windpipe during swallowing?

• • A) Epiglottis

• • B) Larynx

• • C) Bronchi

• • D) Nasal cavity

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

• • A) To warm the air entering the lungs

• • B) To produce sound for speech

• • C) To pump blood throughout the body

• • D) To filter dust and other particles from the air

Which part of the respiratory system is commonly known as the "windpipe"?

• • A) Trachea

• • B) Bronchi

• • C) Larynx

• • D) Alveoli

Which of the following structures splits into two tubes that lead to each lung?

• • A) Alveoli

• • B) Diaphragm

• • C) Bronchi

• • D) Trachea

Which of the following is true about the function of the bronchioles?

• • A) They are the main passageways for air to enter the nasal cavity

• • B) They are tiny air sacs where gas exchange occurs

• • C) They are small tubes that lead to the alveoli

• • D) They prevent food from entering the respiratory tract

What is the function of the alveoli in the respiratory system?

• • A) Filtering dust and particles from the air

• • B) Transporting oxygen to the body's cells

• • C) Exchanging oxygen and carbon dioxide between the lungs and blood

• • D) Supporting the lungs' structure

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

• • A) Filtering air as it enters the nasal cavity

• • B) Supporting the ribcage

• • C) Pumping air in and out of the lungs

• • D) Controlling the flow of oxygen to the heart