Anatomy & Airflow
The muscle that moves down on inhale and up on exhale.
Answer: Diaphragm.
Structure that filters, warms, and moistens incoming air.
Answer: Nose/nasal cavity.
Chronic airway inflammation causing wheezing and coughing.
Answer: Asthma
Exercise increases demand for this gas, making you breathe faster.
Answer: Oxygen.
Tiny air sacs where gas exchange happens.
Answer: Alveoli.
The “voice box” that also helps keep food out of the airway.
Answer: Larynx.
Lung infection with fever, cough, and chest pain; often treated with antibiotics.
Answer: Pneumonia.
Measuring a balloon’s circumference after a deep breath is a quick proxy for this capacity.
Answer: Lung capacity.
The windpipe carrying air from the larynx to the bronchi.
Answer: Trachea.
Two large organs that contain bronchi, bronchioles, and alveoli.
Answer: Lungs.
Uncontrolled cell growth in lung tissue; major risk factor is smoking.
Answer: Lung cancer.
During inhalation, thoracic volume changes how, and pressure changes how?
Answer: Volume ↑ and pressure ↓
These small tubes branch off bronchi inside the lungs.
Answer: Bronchioles.
These blood vessels surround alveoli for gas exchange.
Answer: Capillaries.
Bacterial disease with cough, fever, fatigue; treated with long-term antibiotics.
Answer: Tuberculosis (TB).
Name the process of taking in O₂ and releasing CO₂.
Answer: Respiration
$500 – Clue: Put these in order: nose → ___ → larynx → trachea → bronchi → bronchioles → alveoli.
Answer: Pharynx.
Bony structures that protect lungs and assist breathing movements.
Answer: Ribs.
These medicines in inhalers open narrowed airways during asthma attacks.
Answer: Bronchodilators.
In diffusion at the alveoli, O₂ moves from ___ to ___; CO₂ moves from ___ to ___.
Answer: O₂: alveoli → blood; CO₂: blood → alveoli.