Multiple Choice Questions

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During inspiration, the diaphragm

  • expands

  • shows no change

  • contracts and flattens

  • relaxes to become dome- shaped


C.

contracts and flattens

Breathing or Respiration or Ventilation is the process of moving air into and out of the lungs to facilitate gas exchange with the internal environment. 

Breathing in is called inspiration or inhalation and breathing out is called expiration or exhalation. During inspiration, the diaphragm contracts putting backwards by partial flattening and increase the thoracic cavity lengthwise.


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The exchange of gases in the alveoli of the lungs takes place by

  • Osmosis

  • Simple diffusion

  • Passive transport

  • Active transport


After a deep inspiration and maximum expiration, the capacity of lungs is known as

  • vital capacity

  • tidal volume

  • IRV

  • ERV


The faster breathing in high fever is due to the

  • Additional requirement of O2 for the invader germs

  • High temperature of the body

  • Mental worry of a patient

  • Loss of appetite


Which of the following is a respiratory disease?

  • Polio

  • Arthritis

  • Asthma

  • Cancer


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Which of the following animals possess non-elastic lungs with elastic air sacs connected to them?

  • Reptiles

  • Birds

  • Amphibians

  • Mammals


Carotid labyrinth contains

  • Olfactory receptors

  • Baroreceptors

  • Chemoreceptors

  • Phonoreceptors


Dead space air in man is

  • 500 ml

  • 150 ml

  • 250 ml

  • 1.5 L


From which of the following plant is a medicine for respiratory disorders obtained?

  • Ephedra

  • Eucalyptus

  • Cannabis

  • Saccharum


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Haldane effect refers to

  • More acidity in the blood

  • Less acidity in the blood

  • More basicity in the blood

  • Less basicity in the blood


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