Tag: the mechanism of breathing

Questions Related to the mechanism of breathing

$CO _2$4 is transported mainly as.

evs respiration in organism human respiration the mechanism of breathing breathing and its movements

  1. Dissolved in blood plasma

  2. As carbonic acid

  3. In carbaminohaemoglobin

  4. As carbaminohaemoglobin and carbonic acid

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Correct Option: D

Pneumatic and inhibitory centres are associated with.

evs respiration in organism human respiration the mechanism of breathing breathing and its movements

  1. Respiration

  2. Breathing

  3. Inspiration

  4. Expiration

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Correct Option: B

The number of times a person breathes in a minute is called as

evs respiration in organism human respiration the mechanism of breathing breathing and its movements

  1. Inhalation

  2. Respiratory rate

  3. Breathing

  4. Breathing rate

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Correct Option: D
Explanation:
The number of times a person breathes in a minute is called breathing rate. The normal breathing rate for an adult at rest is 12-20 breathes per minute. Breathing rate below and above this range indicates the diseased condition of a person.
So the correct answer is 'Breathing rate'.

During rest, metabolic requirements are minimum. This is indicated by

evs respiration in organism human respiration the mechanism of breathing breathing and its movements

  1. Pulse

  2. Breathing

  3. $O _2$ intake and $CO _2$ output

  4. All the above

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Correct Option: D

The two organisms which breathe only through their moist skin are.

evs respiration in organism human respiration the mechanism of breathing breathing and its movements

  1. Frog and Earthworm

  2. Fish and Frog

  3. Fish and Earthworm

  4. Leech and Earthworm

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Correct Option: D

Dead space is

evs respiration in organism human respiration the mechanism of breathing breathing and its movements

  1. Upper respiratory tract

  2. Nasal chambers

  3. Alveolar space

  4. Lower respiratory tract

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Correct Option: A
Explanation:
  • Dead space of the respiratory system refers to the space in which oxygen ($O _2$) and carbon dioxide ($CO _2$) gasses are not exchanged across the alveolar membrane in the respiratory tract. 
  • Anatomic dead space specifically refers to the volume of air located in the segments of the respiratory tract that are responsible for conducting air to the alveoli and respiratory bronchioles but do not take part in the process of gas exchange itself. 
  • These segments of the respiratory tract include the upper airways, trachea, bronchi, and terminal bronchioles.
So, the correct option is 'Upper respiratory tract'.

Rate of breathing is controlled by.

evs respiration in organism human respiration the mechanism of breathing breathing and its movements

  1. Amount of freely available oxygen

  2. Carbon dioxide in blood

  3. Stress

  4. Muscular functions of the body

  5. All the above

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Correct Option: B

People migrated from planes to hills six months back.

evs respiration in organism human respiration the mechanism of breathing breathing and its movements

  1. Possess more RBCs with haemoglobin of low $O _2$ binding affinity

  2. Possess same RBCs with haemoglobin of high $O _2$ binding affinity

  3. Lose physical fitness to play games like football

  4. Suffer from altitude sickness with nausea and fatigue

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Correct Option: A

Rapid breathing is?

evs respiration in organism human respiration the mechanism of breathing breathing and its movements

  1. Tachypnea

  2. Hypercapnea

  3. Orthopnea

  4. Eupnea

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Correct Option: A

Which is true?

evs respiration in organism human respiration the mechanism of breathing breathing and its movements

  1. Abdominal breathing is predominant in women

  2. Thoracic breathing is predominant in men

  3. Both A and B

  4. Thoracic breathing is predominant in women

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Correct Option: A