Tag: mechanism of respiration

Questions Related to mechanism of respiration

Muscles attached to diaphragm contract during inspiration to make it.

zoology respiratory system of human mechanism of respiration respiratory cycle breathing and exchange of gas

  1. Flat

  2. Dome-shaped

  3. Concave

  4. Rotate

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Correct Option: A

In expiration, diaphragm becomes.

zoology respiratory system of human mechanism of respiration respiratory cycle breathing and exchange of gas

  1. Flattened

  2. Relaxed

  3. Straightened

  4. Arched/Dome-shaped

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Correct Option: B

At the time of inspiration, the diaphragm.

zoology respiratory system of human mechanism of respiration respiratory cycle breathing and exchange of gas

  1. Expands

  2. Contracts

  3. Relaxes

  4. Does not undergo any change

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Correct Option: B

During inspiration.

zoology respiratory system of human mechanism of respiration respiratory cycle breathing and exchange of gas

  1. Diaphragm and external intercostal muscles relax

  2. Diaphragm and internal intercostal muscles relax

  3. Diaphragm and external intercostal muscles contract

  4. Diaphragm and internal intercostal muscles contract

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Correct Option: C

Which is correct?

zoology respiratory system of human mechanism of respiration respiratory cycle breathing and exchange of gas

  1. During inspiration, external intercostal muscles and diaphragm contract

  2. Cyanosis means collapse of alveoli

  3. Eupnoea is slow breathing

  4. Coryza is caused by human corona virus

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Correct Option: A

Read the following statements regarding mechanism of respiration and choose the correct option.
$1$. Inspiration occurs only when there is negative pressure in the lungs with respect to atmosphere
$2$. Expiration takes place only when intrapulmonary pressure is lower than atmospheric pressure
$3$. Pressure gradients are generated with the help of diaphragm and intercostal muscles
$4$. Inspiration is initiated by relaxation of diaphragm
$5$. Contraction of diaphragm reduces pulmonary volume and increases intrapulmonary pressure causing expiration.

zoology respiratory system of human mechanism of respiration respiratory cycle breathing and exchange of gas

  1. $1, 2$ and $5$ correct

  2. $2$ only correct

  3. $2, 5$ correct

  4. $1, 3$ correct

  5. $1, 4$ correct

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Correct Option: D

With conscious efforts one can.

zoology respiratory system of human mechanism of respiration respiratory cycle breathing and exchange of gas

  1. Breathe out air totally without oxygen

  2. Breathe in and out by moving diaphragm alone without moving ribs at all

  3. Breathe out air through eustachian tube by closing both nose and mouth

  4. Empty the lungs completely by breathing out all air out of them

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Correct Option: B

Which of the following is the most appropriate in normal circumstances?

zoology respiratory system of human mechanism of respiration respiratory cycle breathing and exchange of gas

  1. During inspiration the intrapulmonary pressure is less than the atmospheric pressure

  2. During expiration the intrapulmonary pressure is less than the atmospheric pressure

  3. During inspiration the intrapulmonary pressure is more than the atmospheric pressure

  4. During expiration the intrapulmonary pressure is equal to atmospheric pressure

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Correct Option: A

Diaphragm is straightened during.

zoology respiratory system of human mechanism of respiration respiratory cycle breathing and exchange of gas

  1. Expiration

  2. Inspiration

  3. Interval between expiration and inspiration

  4. Interval between inspiration and expiration

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Correct Option: A

A person breathes in some volume of air by forced inspiration after having a forced expiration. This quantity of air taken in is _______________.

zoology respiratory system of human mechanism of respiration respiratory cycle breathing and exchange of gas

  1. Total lung capacity

  2. Tidal volume

  3. Vital capacity

  4. Inspiratory capacity

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Correct Option: A