Which of the following comprise the lungs

  • tracheae along with network of bronchi, bronchioles and alveoli
  • network of bronchi, bronchioles and alveoli
  • alveoli only
  • Both A and B

Lungs are covered by a double layered membrane which is called

  • Pleural membrane
  • visceral membrane
  • pulmonary membrane
  • parietal membrane

Which of the following is true about pleural membranes except

  • outer pleural membrane is in close contact with the thoracic lining
  • inner pleural membrane is in contact with the lung surface
  • pleural fluid is present between them
  • It increases friction on the lung surface

Which of the following constitute the conduction part of the respiratory system

  • external nostrils to trachea
  • external nostrils to primary bronchioles
  • Respiratory bronchioles to alveoli
  • external nostrils to terminal bronchioles

Which of the following constitute the exchanging part of the respiratory system

  • external nostrils to trachea
  • external nostrils to primary bronchioles
  • Respiratory bronchioles to alveoli
  • external nostrils to terminal bronchioles

Which of the following is the function of the conducting part of the respiratory system?

  • clears the foreign particle
  • humidifies air
  • brings air to body temperature
  • All of these

Which of the following is the part of the thoracic chamber

  • ribs and vertebral column
  • diaphragm
  • sternum
  • All of these

Which of the following is true for diaphragm except

  • muscular structure

  • found in all vertebrates

  • It helps in breathing, urine elimination, and child birth

  • It is dome shaped in normal condition

Which of the following is true

  • Right lungs is greater than left lungs

  • structural and functional unit of lungs is alveoli

  • lungs are non muscular

  • All of the above

How many of the following are steps of respiration
Pulmonary ventilation, diffusion, transport of gases, energy production,
(1)4

(2)3

(3)2

(4)1
  • 1
  • 2
  • 3
  • 4

In the process of respiration how many times the process of diffusion takes place in respiration

  • 4
  • 3
  • 2
  • 1

During inspiration which of the following events takes place
  • Diaphragm and external intercostal muscles contracts
  • Diaphragm and internal intercostal muscles relax
  • Intra Pleural pressure is less than atmospheric pressure
  • Both A and C

During expiration which of the following events takes place
  • Diaphragm and external intercostal muscles contracts

  • Diaphragm and external intercostal muscles relax

  • Inter Pleural pressure is less than atmospheric pressure

  • Both A and C

During inspiration there is __________pressure in the lungs w.r.t atmospheric pressure.

  • positive

  • negative

  • neither positive nor negative

  • All of these

Which of the following is true for inspiration
  • thoracic chamber volume increases

  • Diaphragm contracts

  • pulmonary volume increases

  • All of these

Which of the following is true for expiration except

  • thoracic chamber volume reduces

  • Diaphragm contracts

  • pulmonary volume decreases

  • All of these

Pressure gradient between the lungs and atmosphere is maintained by

  • diaphragm

  • external intercostal muscles

  • internal intercostal muscles

  • All of these

The volume of air involved in breathing movements can be estimated by using

  • ECG
  • Sphygmomanometer
  • spirometer
  • Barometer

Which of the following events happen when air enters lungs

  • Ribs and sternum raised
  • volume of thorax increased
  • Diaphragm contracted
  • All of the above

Which of the following events happen when air expelled from lungs

  • Ribs and sternum returned to original position
  • volume of thorax decreased
  • Diaphragm relaxed and arched upwards
  • All of the above

On an average, a healthy human breathes ______times/minute.

  • 70-72
  • 20-25
  • 12-16
  • 120-80

On an average, a human child breathes ______times/minute.

  • 70-72

  • 24-27

  • 12-16

  • 120-80

The breathing rate of human embryo ______times/minute.

  • 70-72

  • 20-25

  • 12-16

  • None of these

Which of the following is true regarding breathing rate

  • It’s minimum in Whale/Elephant

  • It’s is maximum in shrew

  • more in child than an adult

  • All of these

Which of the following factors will increase the breathing rate

  • Acidity

  • decrease in pH

  • Blood pressure

  • All of the above

Which one is odd out regarding breathing rate

  • heart beat rate

  • B.M.R

  • CO2 concentration

  • Body size

Which of the following volume of air cannot be measured by respirometer?

  • IRV

  • ERV

  • RV

  • Both A and B

Volume of air which does not participate in gaseous exchange is

  • Residual volume

  • Dead space air

  • Tidal volume

  • Both A and B

The volume of air expired normally after forceful inspiration

  • TV+ IRV
  • TV+ERV
  • TV
  • None of these

The volume of air expired forcefully after normal inspiration

  • TV+ IRV
  • TV+ERV
  • TV
  • None of these

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Practice Zoology Quiz Questions and Answers