when you hold your breath which of the following gas

When you hold your breath, which of the following gas changes in blood would first lead to the urge to breathe?

A. rising $$C{O_2}$$ concentration

B. falling $$C{O_2}$$ concentration

C. rising $$C{O_2}$$ and falling $${O_2}$$ concentration

D. falling $${O_2}$$ concentration

Answer : rising $$C{O_2}$$ concentration

Releted MCQ Question on
Zoology >> Breathing and Exchange of Gases

Releted Question 1

Select the correct events that occur during inspiration.
(i) Contraction of diaphragm
(ii) Contraction of external inter-costal muscles
(iii) Pulmonary volume decreases
(iv) Intra pulmonary pressure increases

A. (iii) and (iv)

B. (i), (ii) and (iv)

C. Only (iv)

D. (i) and (ii)

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Releted Question 2

Select the correct statement.

A. Expiration is initiated due to contraction of diaphragm

B. Expiration occurs due to external intercostal muscles

C. Intrapulmonary pressure is lower than the atmospheric pressure during inspiration

D. Inspiration occurs when atmospheric pressure is less than intrapulmonary pressure

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Releted Question 3

The maximum volume of air a person can breathe in after a forced expiration is known as :

A. Total lung capacity

B. Expiratory capacity

C. Vital capacity

D. Inspiratory capacity

View Answer

Releted Question 4

Tidal volume and Expiratory reserve volume of an athlete is $$500\,mL$$ and $$1000\,mL$$ respectively. What will be his Expiratory capacity if the residual volume is $$1200\, mL?$$

A. $$1500\,mL$$

B. $$1700\,mL$$

C. $$2200\,mL$$

D. $$2700\,mL$$

View Answer

When you hold your breath, which of the following gas changes in blood would first lead to the urge to breathe?

Releted MCQ Question on
Zoology >> Breathing and Exchange of Gases

Select the correct events that occur during inspiration.
(i) Contraction of diaphragm
(ii) Contraction of external inter-costal muscles
(iii) Pulmonary volume decreases
(iv) Intra pulmonary pressure increases

Select the correct statement.

The maximum volume of air a person can breathe in after a forced expiration is known as :

Tidal volume and Expiratory reserve volume of an athlete is $$500\,mL$$ and $$1000\,mL$$ respectively. What will be his Expiratory capacity if the residual volume is $$1200\, mL?$$

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Breathing and Exchange of Gases

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When you hold your breath, which of the following gas changes in blood would first lead to the urge to breathe?

Releted MCQ Question on Zoology >> Breathing and Exchange of Gases

Select the correct events that occur during inspiration. (i) Contraction of diaphragm (ii) Contraction of external inter-costal muscles (iii) Pulmonary volume decreases (iv) Intra pulmonary pressure increases

Select the correct statement.

The maximum volume of air a person can breathe in after a forced expiration is known as :

Tidal volume and Expiratory reserve volume of an athlete is $$500\,mL$$ and $$1000\,mL$$ respectively. What will be his Expiratory capacity if the residual volume is $$1200\, mL?$$

Practice More Releted MCQ Question on Breathing and Exchange of Gases

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Releted MCQ Question on
Zoology >> Breathing and Exchange of Gases

Select the correct events that occur during inspiration.
(i) Contraction of diaphragm
(ii) Contraction of external inter-costal muscles
(iii) Pulmonary volume decreases
(iv) Intra pulmonary pressure increases

Practice More Releted MCQ Question on
Breathing and Exchange of Gases