Explanation

• Blood vessels, which include arteries, veins, and capillaries.
• It form a network that carries blood throughout the body.
• It supplying oxygen and nutrients to tissues and organs.

Explanation

Indigestion (also known as dyspepsia) is a common condition characterized by discomfort or pain in the upper abdomen, caused by:

• Eating too much or too quickly
• Consuming spicy or fatty foods
• Drinking alcohol or caffeine
• Stress

Explanation

• Asthma is a common breathing disorder that causes difficulty in breathing due to swollen air passages.
• The airways become inflamed, and the muscles around them constrict, making it hard to breathe.

Explanation

• Smoking is the leading cause of lung cancer.
• It is responsible for about 80-90% of all lung cancer deaths.

Explanation

Asthma and lung cancer are two main disorders that affect the lungs.

• Asthma: a chronic inflammatory disease that causes recurring episodes of wheezing, coughing, chest tightness, and shortness of breath due to the inflammation of the airways.
• Lung Cancer: a disease caused by the abnormal growth of cells.

Explanation

• The lungs are responsible for exchanging oxygen and carbon dioxide through the process of respiration.
• Oxygen from the air we breathe in is absorbed into the bloodstream.
• Carbon dioxide, a waste product, is removed from the bloodstream and exhaled out.

Explanation

• The air you breathe in enters the lungs through the windpipe (trachea).
• The trachea is a tube that connects the throat (pharynx) to the lungs, allowing air to pass through during breathing.

Explanation

• Each bronchial tube (bronchus) is joined to each lung.
• The bronchi are airways that branch off from the trachea (windpipe) and enter the lungs, allowing air to pass through during breathing.

Explanation

• When a person inhales, the air travels through the nose or mouth, into the larynx and then into the trachea; which is the main passageway into the lungs.
• The trachea divides into a right and left bronchi.
• Bronchi branch into smaller tubes that become bronchioles.
  

Explanation

• The trachea (windpipe) is a hollow tube in the chest.
• It connects the throat (pharynx) to the lungs, allowing air to pass through during breathing.