Home
Class 12
BIOLOGY
[A]: in mammalian heart there is a very ...

[A]: in mammalian heart there is a very swift conduction of stimulation all over the body.
[R]: Conduction of stimulation is caused by Purkinje fibres and Bundle of His

A

If both A and R are true and R is the correct explanation of A

B

If both A and R are true but R is not the correct explanation of A

C

If A is true and R is false

D

If both A and R are false

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • ANIMAL KINGDOM -NONCHORDATES

    TRUEMAN BIOLOGY|Exercise MCQ|291 Videos
  • APPLICATION OF BIOTECHNOLOGY

    TRUEMAN BIOLOGY|Exercise Multiple Choice Questions|121 Videos

Similar Questions

Explore conceptually related problems

Which sequence of events best represents the conduction of an impulse through the heart? (i) Sinoatrial node (ii) Atrioventricular node (iii) Purkinje fibres (iv) Bundle of His

Given these structures of the conduction system of the heart 1. Bundles of His 2. AV node 3. Bundle branches 4. Purkinje fibres 5. SA node Choose the arrangement that lists the structures in an order of an action potential passes through them.

TRUEMAN BIOLOGY-Animal Physiology -ASSERTION AND REASON
  1. [A] : The heart of birds is more advanced than the four chambered hear...

    Text Solution

    |

  2. A : Portal system consists of veins which start from capillaries and e...

    Text Solution

    |

  3. [A]: in mammalian heart there is a very swift conduction of stimulatio...

    Text Solution

    |

  4. [A] : Reduced blood can carry more CO2 than oxygenated blood. [R]:...

    Text Solution

    |

  5. [A] : The central nervous system regulates the release of saliva from ...

    Text Solution

    |

  6. [A] : Gall stones are pebble sized structures that formed in the gall...

    Text Solution

    |

  7. [A] : Upon stimulation of a muscle cell, cal- cium ions (Ca^(++)) are...

    Text Solution

    |

  8. [A]: Osteoporosis is a bone disorder that results from the loss of cal...

    Text Solution

    |

  9. [A] : In mammals, ends of presynaptic fibres are enlarged to form syn...

    Text Solution

    |

  10. [A] : Receptors located in tendons, joints and skeletal muscle give in...

    Text Solution

    |

  11. [A]: Lateral-iine organs are important in con- nection with aquatic mo...

    Text Solution

    |

  12. [A] : Accommodation in the bird's eye is controlled by the ciliary app...

    Text Solution

    |

  13. [A] : Mammals lack mucous glands in their skin. [R] : The epidermis ...

    Text Solution

    |

  14. [A] : In old age, the skin gets wrinkled. [R]: Epidermis has a sin...

    Text Solution

    |

  15. [A] : In Mammals sweat glands are primarily concerned with regulation...

    Text Solution

    |

  16. [A] :Spennatogenesis occurs in the seminiferous tubules of the testes ...

    Text Solution

    |

  17. Statement 1 : In a Graafian follicle, the primary cell, the and the f...

    Text Solution

    |

  18. [A] : Amniotic fluid serves as a protective cushion. [R]: It breaks...

    Text Solution

    |

  19. [A]: Entry of sperm brings about a rearrangement of materials of cytop...

    Text Solution

    |

  20. A : in morula stage the cells divide without any increase in siz...

    Text Solution

    |