The document summarizes the respiratory and circulatory systems. It discusses the major organs involved in breathing including the nose, mouth, pharynx, larynx, trachea, bronchi, bronchioles and lungs. It explains that during inhalation, air is brought into the lungs through the nose and mouth and passes through the pharynx, larynx, trachea and bronchi before reaching the bronchioles and alveoli in the lungs where oxygen passes into the blood and carbon dioxide passes out of the blood. During exhalation, the process is reversed as carbon dioxide is expelled from the lungs.

1. RESPIRATORY &
CIRCULATORY
SYSTEMB Y : M S PA U L A M A R I E M L L I D O
BIOLOGY: CHAPTER 1
https://www.slideshare.net/user86944

2. BREATHING
EXERCISE

3. RESPIRATORY ORGANS & FUNCTIONS
•N
•M
•P
•T
•B
•B
•L, A

4. RESPIRATORY ORGANS & FUNCTIONS
Epiglottis
Trachea
Nose
Pharynx
Larynx
Lungs
Bronchus
Mouth
Diaphragm
Bronchioles

6. NOSE
P L A C E Y O U R H A N D I N F R O N T O F Y O U R
N O S E . C A N Y O U F E E L T H E A I R A S Y O U
B R E AT H ?

7. PHARYNX

8. TRACHEA

9. BRONCHUS

10. BRONCHIOLES

11. LUNGS

13. THE MECHANISM
OF GAS
EXCHANGE:
BREATHING IN
AND OUT

14. LET’S WATCH A
VIDEO!

15. MECHANICALRESPIRATION

16. LET’S WATCH A
VIDEO!

17. GAS EXCHANGE IN ALVEOLI
O2
CO2

18. WHAT ARE THE
PARTS OF THE
RESPIRATORY
SYSTEM?

19. WHAT HAPPENS
TO YOUR BODY
DURING
INHALATION?

20. WHAT HAPPENS
TO YOUR BODY
DURING
EXHALATION?

21. HOW DOES GAS
EXCHANGE OCCUR
IN THE
ALVEOLI?