Respiratory
What organ is responsible for breathing?
The lungs
Which organ is responsible for gas exchange in the lungs?
The alveoli.
What gas inhale during inhalation?
Oxygen
What gas do humans exhale as a waste product?
Carbon dioxide (CO₂).
What condition is caused by the narrowing of airways, making breathing difficult?
Asthma
Which structure prevents food from entering the trachea?
The epiglottis.
What are the two branches of the trachea that lead into the lungs?
The bronchi.
Which part of the respiratory system filters dust and germs from the air we breathe?
The nose and nasal cavity.
What is bronchioles?
Branch of bronchus
What is the name of the disease where uncontrolled cell growth in the lungs leads to tumors and reduced lung function?
Lung cancer
What is the medical term for the voice box?
The larynx
What is the name of the tube that connects the throat to the lungs?
The trachea (windpipe).
How does the ribcage move during inhalation?
The ribcage expands outward and upward.
How does the ribcage move during exhalation?
The ribcage inward and downward.
What is the common term for inflammation of the bronchial tubes?
Bronchitis
What is the function of the nasal cavity in respiration?
To filter, warm, and humidify incoming air.
What is the term for the tiny hair-like structures that help move mucus out of the respiratory tract?
Cilia.
What happens to the diaphragm during inhalation?
It contracts and moves downward.
What happens to the diaphragm during exhalation?
It relaxes and moves upward, reducing the chest cavity’s volume.
Chronic lung disease that damages the alveoli, reducing the lungs' ability to exchange oxygen and carbon dioxide is called ...
emphysema
What is the main function of the respiratory system?
To provide oxygen to the body and remove carbon dioxide.
Which lung is slightly smaller and why?
The left lung, to make space for the heart.
What happens to air pressure inside the lungs during inhalation?
It decreases, allowing air to flow into the lungs.
What happens to air pressure inside the lungs during exhalation?
It increases, allowing air to flow out from the lungs.
What are common triggers of asthma attacks?
Allergens (pollen, dust, pet dander), smoke, cold air, exercise, stress, and respiratory infections.