Exploring the Respiratory System

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

• To pump blood throughout the body

• To exchange oxygen and carbon dioxide

• To filter waste from the blood

• To produce digestive enzymes

Where is the trachea located in the human body?

• In the abdominal cavity

• In the chest cavity, in front of the esophagus

• In the cranial cavity

• In the pelvic cavity

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

• To circulate blood

• To aid in digestion

• To help in the process of inhalation and exhalation

• To produce hormones

Which of the following is a part of the respiratory system?

• Liver

• Kidney

• Bronchi

• Pancreas

What is the structure of alveoli best described as?

• Thick-walled sacs

• Thin-walled sacs

• Tubular structures

• Solid masses

Which of the following correctly describes the pathway of air flow in the respiratory system?

• Nose → Pharynx → Larynx → Trachea → Bronchi → Alveoli

• Alveoli → Bronchi → Trachea → Larynx → Pharynx → Nose

• Trachea → Larynx → Pharynx → Nose → Bronchi → Alveoli

• Bronchi → Alveoli → Trachea → Larynx → Pharynx → Nose

Which part of the respiratory system is directly involved in gas exchange?

• Trachea

• Alveoli

• Bronchi

• Larynx

What is the primary function of the trachea?

• To filter blood

• To transport air to the lungs

• To digest food

• To produce sound

Which muscle contracts to allow the lungs to expand during inhalation?

• Intercostal muscles

• Diaphragm

• Abdominal muscles

• Pectoral muscles

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

• To exchange gases with the blood

• To carry air from the trachea to the lungs

• To produce mucus

• To filter air