The volume of air involved in breathing movements can be estimated by using
1. ECG
2. Sphygmomanometer
3. spirometer
4. Barometer
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following is the part of the thoracic chamber
1. ribs and vertebral column
2. diaphragm
3. sternum
4. All of these
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyInspiration can occur if pressure is less than atmospheric pressure, i.e., there is pressure in the lungs with respect to atmosphere pressure. Choose the option that fills the blanks correctly.
A B
1. Intra-pulmonary Positive
2. Intra-pulmonary Negative
3. Inter-pleural Positive
4. Intra-pleural Positive
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyInspiration occurs when intra-pulmonary pressure is
1. Higher than atmospheric pressure
2. Lower than atmospheric pressure.
3. Equal to atmospheric pressure.
4. Zero compared to atmospheric pressure.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe mechanism of breathing depends on animal’s
1. habitat
2. level of organisation
3. Both A and B
4. Body segmentation
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyPressure gradient between the lungs and atmosphere is maintained by
(1)diaphragm
(2)external intercostal muscles
(3)internal intercostal muscles
(4)All of these
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyDuring inspiration there is __________pressure in the lungs with respect to atmospheric pressure.
(1)positive
(2)negative
(3)neither positive nor negative
(4)All of these
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyDuring inspiration, the diaphragm
1. Contracts
2. Expands
3. Does not move
4. Relaxes
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe movement of air into the lungs occurs due to a pressure gradient between the lungs and the atmosphere. So, inspiration occurs when/due to
1. Intra pulmonary is less than the atmospheric pressure
2. Increase in the volume of the thoracic chamber in the dorso-ventral axis
3. Contraction of external inter-costal muscles and phrenic muscles
4. All of these
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyContraction of diaphragm:
1. Increases the volume of the thoracic chamber in the antero-posterior axis
2. Increases the volume of the thoracic chamber in the dorso-ventral axis
3. Decreases the volume of the thoracic chamber in the antero-posterior axis
4. Decreases the volume of the thoracic chamber in the dorso-ventral axis
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology