Respiratory System Crossword Puzzle (2024)

Across

• Trachea – This is the windpipe, the main airway leading from the throat to the lungs.
• Diaphragm – The main muscle used in breathing, separating the thoracic cavity from the abdominal cavity.
• Ribs – The bones that protect the thoracic cavity and support breathing.
• Capillary – These are small blood vessels where the exchange of oxygen and carbon dioxide takes place.
• Epiglottis – This flap of tissue acts as a lid over the trachea, preventing food from entering the lungs during swallowing.
• Sinus – These are air-filled spaces in the skull that help humidify air and enhance voice.
• Inhalation – The act of taking air into the lungs, part of the breathing process.
• Oxygen – This is the essential element that cells use to produce energy through the process of respiration.
• Asthma – A chronic respiratory condition that causes spasms in the bronchi, leading to difficulty in breathing.
• Fibrosis – Refers to the thickening and scarring of connective tissue, often occurring in the lungs.
• Yawn – An involuntary action that helps increase oxygen intake.
• Hemoglobin – The protein in red blood cells responsible for carrying oxygen throughout the body.
• Ventilation – The overall movement of air into and out of the lungs.
• Mucus – A sticky substance produced in the respiratory tract to trap dust, microbes, and other particles.
• Larynx – The structure at the top of the trachea containing the vocal cords; also known as the voice box.
• Nasal – Related to the nose, often referring to the nasal passages.

Down

• Exhalation – The act of breathing out or expelling air from the lungs.
• Bronchi – The major air passages that diverge from the trachea into the lungs, directing air in and out.
• Cilia – Tiny, hair-like structures that line the respiratory tract and help move mucus out of the lungs.
• Interstitial – Referring to the spaces within tissues, often used in the context of lung tissue.
• Pleura – The membrane surrounding the lungs and lining the chest cavity, aiding in smooth lung movement.
• Alveoli – Tiny air sacs in the lungs where the exchange of oxygen and carbon dioxide occurs.
• Glottis – The space between the vocal cords at the top of the larynx.
• Pharynx – The throat area that serves as a passageway for air and food, connecting the mouth and nasal passages to the esophagus.
• Nostril – One of the two external openings of the nose, allowing air entry and exit.