This document describes the parts and functions of the respiratory system. It includes the trachea, bronchi, bronchioles, alveoli, nose, and nasal cavity. It then provides more details on each part and their roles in breathing. Specifically, it notes that air enters through the nose and trachea before reaching the bronchi and bronchioles and ultimately the alveoli where gas exchange occurs. Any failure of these parts to function properly would prevent gases from being delivered to the body and ultimately cause death.

1. WHAT A
BUNCH
OF GRAPES

2. RESPIRATORY SYSTEM

3. PARTS
• TRACHEA
• BRONCHI
• BRONCHIOLES
• ALVEOLI
• NOSE
• NASAL CAVITY

4. PARTS AND FUNCTIONS:

5. PARTS AND FUNCTIONS:
•1. TRACHEA
• THE MAIN TRUNK OF THE SYSTEM BY WHICH
AIR PASSES TO AND FROM THE LUNGS

6. PARTS AND FUNCTIONS:
•2. BRONCHI
• THE MAIN BRONCHUS THAT IS CONNECTED
TO THE TRACHEA THAT SEPARATES THE LEFT
AND RIGHT LUNG.

7. PARTS AND FUNCTIONS:
• 3. BRONCHIOLES
• THE SECONDARY THIN-WALLED BRANCH OF
A BRONCHUS THAT SERVES AS THE LITTLE
PASSAGEWAYS OF AIR TO ENTER THE
ALVEOLI.

8. PARTS AND FUNCTIONS:
• 4. ALVEOLI
• SMALL AIR-CONTAINING COMPARTMENTS
OF THE LUNGS IN WHICH THE BRONCHIOLES
TERMINATE AND FROM WHICH RESPIRATORY
GASES ARE EXCHANGED.

9. PARTS AND FUNCTIONS:
•5. NOSE
• THE PART OF THE HEAD WHERE HUMANS
SMELL AND BREATHE.

10. PARTS AND FUNCTIONS:
•6. NASAL CAVITY
• ONE OF THE TWO OPENINGS OF THE
NOSE.

11. GUIDE QUESTIONS
AND
ANSWERS

12. Q1. WHAT DOES EACH PART OF THE BUNCH OF GRAPES MODEL
REPRESENT IN RELATION TO THE BREATHING SYSTEM?
ANSWER:
• THE GRAPES REPRESENT THE ALVEOLI, THE
SMALLEST STEMS REPRESENT THE
BRONCHIOLES, THE LARGE STEMS
REPRESENT THE BRONCHI AND THE
LARGEST STEM REPRESENTS THE TRACHEA.

13. Q2. HOW WILL YOU DESCRIBE THE PATHWAY OF OXYGEN IN THE
BREATHING SYSTEM?
ANSWER:
• THE AIR ENTERS THE MAIN BRANCH
(TRACHEA) THEN TO THE SMALLER STEMS
(BRONCHI) AND FINALLY TO THE SMALLEST
STEMS (BRONCHIOLES) THAT WILL LATER GO
ON TO THE ALVEOLI.

14. Q3. WHAT WILL HAPPEN IF ONE PART OF THE STEMS FAIL TO CARRY
OUT ITS FUNCTION PROPERLY?
ANSWER:
•THE GASES WILL NEVER BE BROUGHT
INTO THE BODY SYSTEMS AND
OBVIOUSLY, AN ORGANISM WILL
LATER DIE.

15. INFERENCE ABOUT THE TOPIC:
• THE AIR WE BREATHE GOES THROUGH THE NOSE AND THEN
THROUGH THE TRACHEA OR WINDPIPE WHICH SEPARATES
INTO TWO BRANCHES CALLED BRONCHIAL TUBES OR
BRONCHI, ONE ENTERING EACH LUNG.THE BRONCHI
SUBDIVIDE MANY TIMES INSIDE THE LUNGS ANALOGOUS TO
THE BRANCHING PATTERN OF GRAPES FINALLY BECOMING
HAIR LIKE TUBES CALLED BRONCHIOLES . IN THE LAST
PART OF THE TERMINAL, BRONCHIOLES ARE TINY BUBBLE-
LIKE BUNCH OF STRUCTURES CALLED ALVEOLI OR
AIRSACKS.