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Effects of smoking on the lungs

Effects of smoking on the lungs

Smoking severely damages the respiratory system, it may cause COPD or lung cancer.



smoking, tar deposit, emphysema, COPD, lung cancer, tumor, lung tumor, bronchitis, cancer, shortness of breath, respiratory surface, carcinogenic substances, lung, respiratory system, airway, pharynx, larynx, trachea, main bronchus, bronchus, alveolar sac, oxygen mask, cigarette, human, biology

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  • - Substances found in tobacco smoke damage the DNA within cells, which leads to mutations that cause uncontrolled cell division. This causes tumors to grow.
  • tumor formation - Uncontrolled cell growth causes tumors to grow, fed by a network of blood vessels. The tumor destroys the surrounding cells.
  • - Tumor cells may spread through the blood vessels or lymphatic vessels and form new tumors in the body.
  • brain tumor - Lung cancer often results in metastatic tumors in the brain.
  • lung tumor

Tobacco smoke contains carcinogenic substances that damage DNA. This may lead to uncontrolled cell growth and the formation of tumors.

Besides destroying tissues, malignant or cancerous tumors may cause metastatic tumors: tumor cells spread throughout the lymphatic system or the blood vessels and form tumors in other parts of the body.

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Respiratory system

The respiratory system is responsible for the intake of oxygen and the release of carbon dioxide.

The bones of the thorax

The ribs, the sternum and the spinal column form the skeleton of the chest.

The human blood

Human blood consists of blood cells and plasma.

Carbon dioxide (CO₂) (intermediate)

Colorless, odorless, heavier-than-air gas. Necessary for the photosynthesis of plants.

Carbon monoxide (CO) (beginner)

Colorless, odorless gas, highly toxic to humans and animals in high concentration.

Carbon monoxide (CO) (intermediate)

Colorless, odorless gas, highly toxic to humans and animals in high concentration.

Deep vein thrombosis and pulmonary embolism

A blood clot that forms in the deep veins of the lower limbs can cause a fatal pulmonary embolism if they enter the lungs.

Heart attack

The cause of a heart attack is the blockage of a coronary artery. It is one the most common causes of death.

How do fish breathe?

Blood vessels in fishes' gills absorb oxygen and release carbon dioxide.

Oxygen (O₂) (intermediate)

A colorless, odorless gas, an important component of the atmosphere, indispensable to sustain terrestrial life.

Voice production

When producing sound, the vocal cords are vibrated by the air flowing out of the lung.

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