EASY
6th ICSE
IMPORTANT
Earn 100

During inhalation
(a)Diaphragm relaxes and rib muscles contact
(b)Diaphragm contacts and rib muscles relax
(c)Both diaphragm and rib muscles relax
(d)Both diaphragm and rib muscles contract

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Important Questions on Human Respiratory System
EASY
6th ICSE
IMPORTANT

EASY
6th ICSE
IMPORTANT

EASY
6th ICSE
IMPORTANT

MEDIUM
6th ICSE
IMPORTANT

MEDIUM
6th ICSE
IMPORTANT

MEDIUM
6th ICSE
IMPORTANT
Given below is a picture of the internal structure of the lungs. Label parts 1 to 4.

MEDIUM
6th ICSE
IMPORTANT
The figure shows the process of inhalation. Label parts 1 to 6.

HARD
6th ICSE
IMPORTANT
The figure shows the process of inhalation. Write the changes that occur in these parts during exhalation.
