The document describes the key structures and functions of the respiratory system. It discusses how respiration works by explaining that glucose and oxygen react to release energy. It then outlines the main parts of the respiratory system including the nose, larynx, trachea, bronchi, and alveoli. It notes important characteristics of the alveoli that enable efficient gas exchange. Finally, it briefly discusses some respiratory disorders and the effects of aging on the lungs and breathing.
1. RESPIRATORY
SYSTEM
BY
SARAH PAUL
ARPITHA BABU THYKATTIL
JANVI AMARDEEP JOSEPH
2. What is respiration???
Respiration is the chemical process
whereby energy is released from glucose
or other simple substances.
Glucose + Oxygen Energy + Carbon Dioxide + Water
3. Flow of the air from the nose to the
alveolus
18. Gaseous exchange take place in lungs
through diffusion.
19. Alveolus characteristics which allows the
efficiency of the diffusion :
Large surface area
Surrounds by network of
capillaries
Thin and elastic
Moist surface
26. Inhalation Differences Exhalation
Increases Volume of thoracic cavity Decreases
Decreases Air pressure in thoracic Increases
cavity
Move upward and Ribs Move downward and
outward inward
Drawn into thoracic Flow of air Expelled from the
cavity thoracic cavity
To suck oxygen Function To expel carbon dioxide
32. Nostrils Nasal Cavity Trachea ??
The flow chart above shows the
route of air through the body.
What is components after
trachea?
A. Bronchioles
B. Diaphragm
C. Rib cage
D. Bronchus
35. What are the characteristics of alveolus to
allow the efficient diffusion of air?
I. Moist
II. Large surface area
III. Thicker wall
IV. Big
A. I only
B. I and II
C. III and IV
D. All above