Biology/Chapter 3: Respiratory System of Man
3.6.4 Effects of Smoking
The effects of smoking on the respiratory system are: 1.
Explanation level
The effects of smoking on the respiratory system are:
- Cigarette smoking causes about 87% of lung cancer.
- Besides lung cancer, cigarette smoking is also a major cause of cancer of the mouth, larynx, and esophagus.
- Cigarette smoking causes other lung diseases, e.g., chronic bronchitis, emphysema.
- Cigarette smoke contains chemicals which irritate the air passages and lungs, causing early morning cough.
- Smokers are likely to get pneumonia because damaged or destroyed cilia cannot protect lungs from bacteria and viruses that float in the air.
- Almost immediately, smoking can make it hard to breathe. Within a short time, it can also worsen asthma and allergies.
Summary Table of Respiratory Disorders
| Disorder | Cause | Symptoms | Treatment |
|---|---|---|---|
| Sinusitis | Cold, pollution, infection | Fever, nasal obstruction, facial pain | Antibiotics, nebulization |
| Otitis media | Eustachian tube malfunction | Ear pain, fever, hearing difficulty | Antibiotics, pain medication |
| Pneumonia | Bacteria, viruses, fungi | Cough, fever, chest pain | Antibiotics, antifungals, antivirals |
| Tuberculosis | Mycobacterium tuberculosis | Fever, night sweats, weight loss | DOTS (9 months) |
| Emphysema | Smoking, pollution | Shortness of breath, cough | Quit smoking, bronchodilators |
| COPD | Smoking, fumes, genetics | Shortness of breath, cough | Quit smoking, bronchodilators |
Intermediate Level
Upper vs Lower Respiratory Tract Infections
| Feature | Upper Respiratory Tract | Lower Respiratory Tract |
|---|---|---|
| Structures | Nose, pharynx, larynx | Trachea, bronchi, lungs |
| Infections | Sinusitis, otitis media | Pneumonia, tuberculosis |
| Symptoms | Nasal obstruction, ear pain | Cough, fever, chest pain |
| Treatment | Antibiotics, decongestants | Antibiotics, antivirals, antifungals |
Comparison of Respiratory Disorders
| Disorder | Cause | Symptoms | Treatment |
|---|---|---|---|
| Sinusitis | Cold, pollution, infection | Fever, nasal obstruction, facial pain | Antibiotics, nebulization |
| Otitis media | Eustachian tube malfunction | Ear pain, fever, hearing difficulty | Antibiotics, pain medication |
| Pneumonia | Bacteria, viruses, fungi | Cough, fever, chest pain | Antibiotics, antifungals, antivirals |
| Tuberculosis | Mycobacterium tuberculosis | Fever, night sweats, weight loss | DOTS (9 months) |
| Emphysema | Smoking, pollution | Shortness of breath, cough | Quit smoking, bronchodilators |
| COPD | Smoking, fumes, genetics | Shortness of breath, cough | Quit smoking, bronchodilators |
Effects of Smoking
| Effect | Description |
|---|---|
| Lung cancer | 87% caused by smoking |
| Other cancers | Mouth, larynx, esophagus |
| Chronic bronchitis | Long-term inflammation |
| Emphysema | Damage to alveoli |
| Pneumonia | Damaged cilia cannot protect lungs |
| Asthma | Worsened by smoking |
| Allergies | Worsened by smoking |
Formula / Mathematical Form
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Important Points
- 1. Sinusitis is inflammation of nasal sinuses.
- 2. Otitis media is infection of middle ear.
- 3. Pneumonia is infection of alveoli.
- 4. Tuberculosis is caused by Mycobacterium tuberculosis.
- 5. Emphysema is damage to alveolar walls.
- 6. COPD is chronic obstructive pulmonary disease.
- 7. Smoking causes 87% of lung cancer.
- 8. Smoking causes chronic bronchitis and emphysema.
- 9. Smoking damages cilia.
- 10. DOTS is the treatment for tuberculosis.
- 11. Sinusitis can be treated with antibiotics and nebulization.
- 12. Otitis media can be treated with antibiotics.
- 13. Pneumonia can be treated with antibiotics, antifungals, or antivirals.
- 14. Emphysema can be treated by quitting smoking and bronchodilators.
- 15. COPD can be treated by quitting smoking and bronchodilators.
Remember
- - Sinusitis = inflammation of sinuses
- - Otitis media = middle ear infection
- - Pneumonia = alveolar infection
- - Tuberculosis = Mycobacterium tuberculosis
- - Emphysema = alveolar damage
- - COPD = chronic obstructive pulmonary disease
- - Smoking = 87% of lung cancer
- - DOTS = tuberculosis treatment
- - Cilia = damaged by smoking
- - Bronchodilators = treat emphysema and COPD
Common Mistakes
- 1. Confusing sinusitis and otitis media — Sinusitis = sinuses; otitis media = middle ear.
- 2. Thinking pneumonia is only caused by bacteria — It can also be caused by viruses and fungi.
- 3. Forgetting the cause of tuberculosis — Mycobacterium tuberculosis.
- 4. Mixing up emphysema and COPD — Emphysema is a type of COPD.
- 5. Thinking smoking only causes lung cancer — It also causes chronic bronchitis, emphysema, and other cancers.
- 6. Forgetting the role of cilia — Cilia protect the lungs from bacteria and viruses.
- 7. Confusing the symptoms — Sinusitis: facial pain; otitis media: ear pain; pneumonia: chest pain.
- 8. Mixing up the treatments — DOTS is for tuberculosis; bronchodilators for emphysema and COPD.
- 9. Believing tuberculosis is not curable — It can be cured with DOTS.
- 10. Thinking emphysema is reversible — Emphysema is not reversible.
Quick Revision
Respiratory disorders refer to diseases that affect the lungs and other parts of the respiratory system. Upper respiratory tract infections include sinusitis (inflammation of nasal sinuses) and otitis media (infection of the middle ear). Lower respiratory tract infections include pneumonia (infection of alveoli) and pulmonary tuberculosis (caused by Mycobacterium tuberculosis). Disorders of the lungs include emphysema (damage to alveolar walls) and COPD (chronic obstructive pulmonary disease). Smoking causes about 87% of lung cancer and is a major cause of chronic bronchitis, emphysema, and other respiratory diseases. Smoking damages cilia, making smokers more susceptible to pneumonia. Treatment options include antibiotics, antifungals, antivirals, bronchodilators, and DOTS for tuberculosis.
60-Second Revision
- Sinusitis = inflammation of sinuses
- Otitis media = middle ear infection
- Pneumonia = alveolar infection
- Tuberculosis = Mycobacterium tuberculosis
- Emphysema = alveolar damage
- COPD = chronic obstructive pulmonary disease
- Smoking = 87% of lung cancer
- DOTS = tuberculosis treatment
- Cilia = damaged by smoking
- Warning: Smoking damages cilia, leading to increased risk of pneumonia
NEXT TOPIC
- Chapter:
- 3. Respiratory System of Man
- Topic:
- 3.7 EFFECTS OF SMOKING
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3.6.4 Effects of Smoking
Sticky Notes · Quick Revision
Key Point 1
- Sinusitis = inflammation of sinuses
Key Point 2
- Otitis media = middle ear infection
Key Point 3
- Pneumonia = alveolar infection
Key Point 4
- Tuberculosis = Mycobacterium tuberculosis
Key Point 5
- Emphysema = alveolar damage
Key Point 6
- COPD = chronic obstructive pulmonary disease
Key Point 7
- Smoking = 87% of lung cancer
Key Point 8
- DOTS = tuberculosis treatment
Key Point 9
- Cilia = damaged by smoking
Key Point 10
- Bronchodilators = treat emphysema and COPD
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