WorksheetsUnderstanding the Human Respiratory System
Total questions: 9
Worksheet time: 5mins
What is the main organ of the respiratory system?
Liver
Kidneys
Heart
Lungs
Name the tube that carries air to the lungs.
esophagus
trachea
alveoli
bronchi
What is the function of the diaphragm in breathing?
The diaphragm regulates blood flow in the body.
The diaphragm filters air before it enters the lungs.
The diaphragm helps in the process of breathing by contracting to allow air into the lungs and relaxing to expel air.
The diaphragm produces sound during speech.
Which part of the respiratory system is responsible for gas exchange?
Alveoli
Trachea
Lungs
Bronchi
What are the tiny air sacs in the lungs called?
Alveoli
Pleura
Alveolar ducts
Bronchi
How does oxygen enter the bloodstream?
Oxygen enters the bloodstream via the stomach.
Oxygen enters the bloodstream through the alveoli in the lungs.
Oxygen is absorbed through the skin.
Oxygen is transported by red blood cells from the liver.
What happens to the diaphragm when we inhale?
The diaphragm relaxes and moves upward.
The diaphragm expands and moves upward.
The diaphragm contracts and moves downward.
The diaphragm remains unchanged during inhalation.
Name one common respiratory disease.
Arthritis
Asthma
Hypertension
Diabetes
Why is it important to breathe through the nose rather than the mouth?
It is important to breathe through the nose because it filters and warms the air, promotes better oxygen exchange, and supports overall respiratory health.
Mouth breathing helps in cooling the body more effectively.
Nasal breathing is only beneficial during exercise.
Breathing through the mouth increases lung capacity.
