Page 24 - e book prim 611
P. 24
Delta Modern Language Schools ❖Its role during danger:
Science department
Grade 6
1st term 2024- 2025
The circulatory system depends on the lungs to do its function,
where:-
Lungs Lungs take in oxygen gas, and release carbon dioxide gas.
diaphragm ❖ When the diaphragm muscle contracts, the lungs take in
the air rich in
oxygen gas.
❖ When the
muscle relaxes,
the lungs release
the air rich in
carbon dioxide
gas.
The carries oxygen from lungs to all the body organs and other
bloodstream tissues
During the fight – flight response.
• releases • pumps blood • provides
hormones to quickly around different organs
fight the danger the body with oxygen such
or to run away carrying oxygen, as muscles and
from it. nutrients and brain.
hormones to
Endocrine Respiratory
System Ccirecllus.latory system
System
24
