Major contribution in inhalation by:
A. Diaphragm
B. Intercoastal muscles
C. Sternum
D. None of these
Presence of cartilaginous rings in respiratory tract sct as:
A. Support
B. Keep passage open
C. Prevent collapsing
D. All of the above
The distribution of air into lungs is controlled by:
A. Bronchi
B. Bronchioles
C. Air sacs
D. All of these
Who was the First President of India?
A. Rajendra Prasad
B. Vallabhai Patel
C. Jawaharlal Nehru
D. Lal Bahadur Shastri
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