Night 7k to 12k Chennai City Center Call Girls 👉👉 7427069034⭐⭐ 100% Genuine E...
Unit b section - 3.2 respiratory system
1.
2.
3. Primary purpose of supplying your blood with
oxygen
Also has the purpose of removing Carbon
Dioxide from your blood and releasing it to
the outside
Without the removal of CO2, we would only
live a short time before poisoning ourselves
4.
5. Every breath we take in is made up of:
◦ 78% Nitrogen
◦ 21% Oxygen
◦ 0.96% Argon
◦ 0.04 % Mixed Gases
Every breath we take out is made up of:
◦ 78% Nitrogen
◦ 16-17% Oxygen
◦ 4-5% Carbon Dioxide minus 4-5% oxygen
◦ 0.96% Argon add 4-5% carbon dioxide
◦ 0.04% Mixed gases
6.
7. In Pairs, one of you grab a beaker labeled A,
and the other grabs one labeled B
Grab a straw each, gently blow 5 deep
breaths into tube B – the do the same to A.
What happens?
8. Inside the test tube contains an indicator
called Bromothymol Blue
This will show the presence of Carbon
dioxide by changing colour.
9.
10. Is the process of moving air in and out of
your lungs
On average we breath 20-24 time per minute
12. We are able to breathe because the muscles
of our ribs and diaphragms
◦ These muscle contract when we breathe in—this
causes the ribs to move up and the diaphragm to
move down
This expands our chest size and brings air in
◦ When you exhale these muscles relax, this
decreases the size of your chest and pushes air out
13. Air is drawn into the body through the mouth or
nose
Little CILIA hairs are present in the airway that
grab particles that can be harmful
The mucus of the nose filters the air and the
blood warms the air
This action causes the chest to expand and
opens room for the lungs to bring air in
14.
15. After the air is breathed in by the nose or mouth
it moves to the Pharynx
◦ Common air and food passage way
◦ Then goes down the Larynx which leads to the TRACHEA
◦ The larynx contains the voice box
When you eat the larynx is closed off by a flap of skin called
the epiglottis
It reopens when you breathe
16.
17. Also known as your wind pipe
This is the tube that the air follows after it is
breathed in by the mouth or nose
This tube leads the air to the Bronchial Tree
18.
19. Tough connective tissue that lead air into the
lungs
Main purposes is to lead the air into the lungs
and prevent the lungs from collapsing on
themselves as they deflate
20.
21. The bronchi tubes narrow out and split into
separate tubes known as the bronchioles
Bronchioles are tube like sections that lead to
tiny air filled sacs called Alveoli
22.
23. There are about 600,000,000 alveoli in the
lungs of a human.
These are surrounded by capillaries that
transfer oxygen and carbon dioxide
Alveoli are made of one-cell thick tissue.
◦ Diffusion becomes very critical in this stage
24.
25. The air in the alveoli has:
◦ High concentration oxygen, low concentration of
CO2
◦ The blood in the capillaries arround the alveoli have
low oxygen concentration and high CO2
◦ Oxygen diffuses one way, CO2 diffuses the other
◦ This whole process take ONE SECOND to complete
26.
27. The air you breathe has oxygen that is
transferred into the blood and is then
brought all over the body for use.
The Carbon dioxide is transferred into the
alveolis from the blood
