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A pair of external nostrils present in h...

A pair of external nostrils present in humans opens
out

A

Below the upper lips

B

Above the upper lips

C

Between upper and lower lips

D

Above the larynx

Text Solution

Verified by Experts

The correct Answer is:
B
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AAKASH INSTITUTE-BREATHING AND EXCHANGE OF GASES -ASSIGNMENT SECTION - B
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  2. A pair of external nostrils present in humans opens out

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  4. What are the characteristics of alveoli?

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  6. Ventrally and laterally, the thoracic chamber is formed by

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  7. During inspiration, the volume of thoracic caity increases because o...

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  9. What instrument helps in clinical assessment of pulmonary functions?

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  10. Expiration occurs due to

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  12. Diaphragm is a dome-shaped muscular structure which separates

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  15. Volume of air remains in the lungs after normal expiration is

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  18. What is the percentage of O(2) transported in dissolved form through...

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  19. How many O(2) bolecules can vind with single molecule og Hb?

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  20. To which part of Hb, CO(2) binds?

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