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Title: Respiration Topic: Process of Air Reaching The Lungs, O-levels Biology
Description: These notes, are for O-levels, grade 9,10 and 11, cover in detail how air from the surrounding environment reaches our lungs and thoroughly discusses the organs that play and important path in transferring the air to the lungs. The special features of these organ are also discussed which allow them to carry out their functions efficiently.
Description: These notes, are for O-levels, grade 9,10 and 11, cover in detail how air from the surrounding environment reaches our lungs and thoroughly discusses the organs that play and important path in transferring the air to the lungs. The special features of these organ are also discussed which allow them to carry out their functions efficiently.
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Respiration Topic:- Process of Air Reaching The Lungs,
O-levels Biology
Written by:- Maria Batool
Table of Contents
How does air reach the lungs?
How does air reach the lungs?
1
...
Trachea:
There two types of cells in epithelium:
3
...
Alveoli:
2
3
3
3
3
3
4
How does air reach the lungs?
O-levels: Grade 9,10 and 11
Do you know how air reaches the lungs in the human body? In this lesson we will
discuss, what path does the air take to reach the lungs
...
The Nose:
Air usually enters our body through the two external nostrils
...
The two nostrils lead to the nasal passages
which are lined with a moist substance, known as mucous
...
As air passages through the nasal passages it is warmed and
moistened
...
2
...
This cartilage
keeps the lumen of the trachea open
...
There two types of cells in epithelium:
● The gland cells which secrete mucus to trap dust particles and germs
...
They are on the surfaces
of the epithelium
...
3
...
Each
bronchi carries air into the lung
...
These are very fine tubes, each bronchiole ends in a cluster of
air sacs or alveoli
...
Alveoli:
Gas exchange takes place through the walls of these air sacs
...
Title: Respiration Topic: Process of Air Reaching The Lungs, O-levels Biology
Description: These notes, are for O-levels, grade 9,10 and 11, cover in detail how air from the surrounding environment reaches our lungs and thoroughly discusses the organs that play and important path in transferring the air to the lungs. The special features of these organ are also discussed which allow them to carry out their functions efficiently.
Description: These notes, are for O-levels, grade 9,10 and 11, cover in detail how air from the surrounding environment reaches our lungs and thoroughly discusses the organs that play and important path in transferring the air to the lungs. The special features of these organ are also discussed which allow them to carry out their functions efficiently.