CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
Question

The atmospheric pressure of oxygen ______ with an increase in altitude.

A
decreases
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
increases
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
remains constant
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
slightly changes
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A decreases
Atmospheric pressure decreases with an increase in altitude. As a result, the partial pressure of oxygen will also decrease. Although the percentage of oxygen in inspired air is constant at different altitudes, the fall in atmospheric pressure at higher altitude decreases the partial pressure of inspired oxygen and hence, the driving pressure for gas exchange in the lungs.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
BIOLOGY
Watch in App
Join BYJU'S Learning Program
CrossIcon