Multiple Choice Quiz on Respiratory system

This quiz is designed to assess your basic knowledge in ‘respiratory system'. Questions come under ‘medium’ category. Choose the best answer from the four options given. When you've finished answering as many of the questions as you can, scroll down to the bottom of the page and check your answers by clicking ' Score'. Percentage score will be displayed along with right answers.
respiratory system
1. Skin is an accessory organ of respiration in
2. At high altitude, the RBCs in the human blood will
increase in number
increase in size
decrease in size
decrease in number
3. The respiratory centre which regulates respiration is located in
medulla oblongata
cerebral peduncle
the vagus nerve
4. The ventilation movements of the lungs in mammals are governed by
muscular walls of lung
costal muscles
both b and c
5. Which vertebrate organ receives only oxygenated blood?
6. The majority of carbon dioxide produced by our body cells is transported to the lungs
as carbonates
as bicarbonates
dissolved in the blood
attached to haemoglobin
7. How the transport of oxygen and carbon dioxide by blood happens?
with the help of WBCs sand blood serum
with the help of RBCs and blood plasma
with the help of RBCs and WBCs
with the help of platelets and corpuscles
8. When carbon dioxide concentration in blood increases breathing becomes
slow and deep
faster and deeper
shallower and slow
there is no effect on breathing
9. An average person not doing hard work requires energy per day about
750 kcal
1000 kcal
2000 kcal
2800 kcal
10. The respiratory centres, which control inspiration and expiration, are located in
spinal cord
medulla oblongata
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