Basics of the Respiratory System

What is the primary function of the respiratory system?

• To circulate blood throughout the body

• To exchange gases between the body and the environment

• To digest food

• To produce hormones

Which of the following structures is the site of gas exchange in the lungs?

• Trachea

• Bronchi

• Alveoli

• Larynx

What muscle plays a crucial role in the process of inhalation?

• Diaphragm

• Biceps

• Quadriceps

• Trapezius

Which of the following is the correct pathway of air into the lungs?

• Nasal cavity → Larynx → Trachea → Bronchi → Alveoli

• Nasal cavity → Trachea → Larynx → Bronchi → Alveoli

• Nasal cavity → Bronchi → Trachea → Larynx → Alveoli

• Nasal cavity → Alveoli → Bronchi → Trachea → Larynx

What is the primary gas that is exhaled from the body?

• Oxygen

• Nitrogen

• Carbon dioxide

• Helium

Which part of the brain regulates the rate of breathing?

• Cerebrum

• Cerebellum

• Medulla oblongata

• Hypothalamus

What is the term for the maximum amount of air a person can exhale after a maximum inhalation?

• Tidal volume

• Residual volume

• Vital capacity

• Inspiratory reserve volume

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

• Nasal cavity

• Pharynx

• Larynx

• Bronchi

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

• To produce mucus

• To filter and trap particles from inhaled air

• To exchange gases

• To produce sound

Which of the following conditions is characterized by the inflammation of the bronchi?

• Asthma

• Bronchitis

• Pneumonia

• Tuberculosis