Home
Class 12
BIOLOGY
During inspiration, the volume of thorac...

During inspiration, the volume of thoracic caity
increases because of

A

Contraction of diaphragm and external intercostal muscles

B

Relaxation of diaphragm and external intercostal muscles

C

Contraction of diaphragm and relaxation of external intercostal muscles

D

Relaxation of diaphragm and contraction of external intercostal muscles

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • BREATHING AND EXCHANGE OF GASES

    AAKASH INSTITUTE|Exercise ASSIGNMENT SECTION - C|50 Videos

  • BREATHING AND EXCHANGE OF GASES

    AAKASH INSTITUTE|Exercise ASSIGNMENT SECTION - D|11 Videos

  • BREATHING AND EXCHANGE OF GASES

    AAKASH INSTITUTE|Exercise ASSIGNMENT SECTION - A|35 Videos

  • BODY FLUIDS AND CIRCULATION

    AAKASH INSTITUTE|Exercise Assignment Section - D Assertion - Reason Type Questions|9 Videos

  • CELL CYCLE AND CELL DIVISION

    AAKASH INSTITUTE|Exercise SECTION-D (Assertion-Reason Type Questions )|10 Videos

Similar Questions

Explore conceptually related problems

During inspiration , the volume of thoracicavity increases because of

During inspiration, the diaphragm

During inspiration in humans

During inspiration the diaphragm

During normal inspiration

During inspiration muscles of diaphragm

During inspiration , the diaphragm:

By the contration in radial muscle of diaphragm it become flattened in shape, so, volume of thoracic cavity increases in :-

AAKASH INSTITUTE-BREATHING AND EXCHANGE OF GASES -ASSIGNMENT SECTION - B
  1. What is the function of respiratory part of human respiratory system...

    Text Solution

    |

  2. Ventrally and laterally, the thoracic chamber is formed by

    Text Solution

    |

  3. During inspiration, the volume of thoracic caity increases because o...

    Text Solution

    |

  4. Volume of thoracic chamber increases in antero- prosterior and dorse-...

    Text Solution

    |

  5. What instrument helps in clinical assessment of pulmonary functions?

    Text Solution

    |

  6. Expiration occurs due to

    Text Solution

    |

  7. What happens to the volume of pulmonary cavity when there is an incr...

    Text Solution

    |

  8. Diaphragm is a dome-shaped muscular structure which separates

    Text Solution

    |

  9. What happens when pressure within the pulmonary cavity is higher tha...

    Text Solution

    |

  10. An additional volume of air, a person can inspire by a forceful insp...

    Text Solution

    |

  11. Volume of air remains in the lungs after normal expiration is

    Text Solution

    |

  12. What is the value of pO(2) in alveoli and tissues respectively?

    Text Solution

    |

  13. Which are the three main layers that form the diffusion membrane?

    Text Solution

    |

  14. What is the percentage of O(2) transported in dissolved form through...

    Text Solution

    |

  15. How many O(2) bolecules can vind with single molecule og Hb?

    Text Solution

    |

  16. To which part of Hb, CO(2) binds?

    Text Solution

    |

  17. Which of the following condition is not reponsible for shifting the ...

    Text Solution

    |

  18. Which factors favour the binding of CO(2) with Hb in tissues?

    Text Solution

    |

  19. Pneumotaxic center can moderate the functions of respiratory rhythm ...

    Text Solution

    |

  20. A chronic disorder in which alveolar walls are damaged duw to excess...

    Text Solution

    |