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The Marvelous Mechanics
of Human Lungs: A Deep
Dive
Explore the incredible structure and function of human lungs.
Understand how these vital organs support life through
continuous breathing and oxygen exchange.
by Neel Mistry
&jeet jani
PAGE NO.1

The Respiratory System:
An Overview
Primary function
Supply oxygen and
remove carbon dioxide
from the body
Major organs
Lungs, trachea, bronchi,
and diaphragm work
together
Breathing process
Involves inhalation and exhalation powered by diaphragm
movement
PAGE NO.2

Anatomy of the Lungs: Lobes, Fissures, and Pleura
Lobes
Right lung has 3 lobes, left lung
has 2 lobes
Fissures
Divide the lobes; horizontal and
oblique fissures in right lung
Pleura
Double-layered membrane
protecting lungs and reducing
friction
PAGE NO.3

The Airways: Trachea,
Bronchi, and Bronchioles
Trachea
Main windpipe connecting
throat to lungs
Bronchi
Two large branches
entering each lung from
the trachea
Bronchioles
Smaller branches spreading throughout the lung tissue
PAGE NO.4

Alveoli: Where Gas Exchange Happens
Alveoli Function
Tiny sacs where oxygen enters
blood and carbon dioxide exits
Capillary Network
Dense network surrounding alveoli
for efficient gas exchange
Oxygen Transport
Oxygen binds to red blood cells
and circulates through the body
PAGE NO.5

The Diaphragm and
Breathing Mechanics
Inhalation
Diaphragm contracts and moves downward, lungs
expand
Exhalation
Diaphragm relaxes and moves upward, air is expelled
Breathing Control
Brain regulates breathing rate based on oxygen needs

Lung Diseases and Their Impact
Disease Main Impact Symptoms
Asthma Airway inflammation Wheezing, shortness of breath
Chronic Bronchitis Mucus buildup Persistent cough, mucus
Emphysema Alveoli damage Reduced oxygen exchange
PAGE NO.7

Maintaining Healthy Lungs:
Tips and Prevention
Avoid smoking
Smoking harms lungs; quitting improves lung function
Exercise regularly
Physical activity strengthens respiratory muscles and capacity
Limit pollutants
Avoid exposure to harmful air pollutants and allergens
Get vaccinated
Vaccines prevent respiratory infections like flu and
pneumonia

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