Subject :NSO Class : Class 7
The given graph shows changes in the pressure in lungs during breathing.
Which of the following is incorrect regarding this?
(i) Region R to T represents inhalation.
(ii) Region P to R represents inhalation.
(iii) Region P to R represents exhalation.
(iv) Ribcage will move upward and diaphragm will get flattened at point S.
(v) Ribcage will move downward and diaphragm will become dome shaped at point S.
A(ii), (iii) and (v)
B(i), (iii) and (iv)
C(ii) and (v) only
D(i) and (iii) only
Ans 1:
Class : Class 7
Ans 2:
Class : Class 7
air pressure decreases during inhalation
Ans 3:
Class : Class 7
answer is option c