Human Respiratory System

What is the main organ of the respiratory system responsible for the exchange of oxygen and carbon dioxide?

• brain

• stomach

• heart

• lungs

Which structure in the respiratory system is commonly known as the voice box?

• pharynx

• bronchi

• larynx

• trachea

What are the tiny air sacs in the lungs where gas exchange takes place called?

• Bronchioles

• Pleura

• Trachea

• Alveoli

Which part of the respiratory system is responsible for filtering, warming, and moistening the air we breathe?

• Bronchi

• Trachea

• Alveoli

• Nasal cavity

What is the tube that connects the throat to the bronchi and carries air to the lungs?

• bronchioles

• esophagus

• pharynx

• trachea

Which muscle plays a crucial role in the process of breathing by expanding and contracting the chest cavity?

• diaphragm

• quadriceps

• biceps

• abdominals

What is the flap of cartilage that covers the opening of the trachea during swallowing to prevent food from entering the airway?

• Pharynx shield

• Tracheal valve

• Larynx cover

• Epiglottis

Which structure in the respiratory system contains the vocal cords and is crucial for speech production?

• pharynx

• trachea

• bronchi

• larynx

What is the medical term for the windpipe?

• esophagus

• bronchus

• trachea

• alveoli

Which part of the respiratory system is responsible for producing mucus to trap dust and other particles in the air?

• Bronchi

• Alveoli

• Trachea

• Mucous membrane