Home
Class 11
BIOLOGY
Heart beat can be initiated by The ca...

Heart beat can be initiated by
The cardiac pacemaker in a patient fails to function normally . The doctors find that an artificial pacemaker is to be grafted in him. It is likely that it will be grafted at the site of

A

Sino-auricular node

B

Atri-ventricular node

C

Sodium ion

D

Purkinje's fibres

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • BIOMOLECULES

    ERRORLESS |Exercise Biomolecules|228 Videos

  • BREATHING AND EXCHANGE OF GASES

    ERRORLESS |Exercise Breathing And Exchange Of Gases|225 Videos

Similar Questions

Explore conceptually related problems

The cardiac pacemaker in a patient fails to function normally. The doctors find that an artifical pacemaker is to be grafted in him. It is likely that it will be grafted at the site of -

The cardiac pacemaker in a patient falls to function normally.the doctors find that an artificial pacemaker is to be grafted in him.Is is likely that it will be grafted at the site of

Assertion : An artificial pacemaker can replace the SA node of heart. Reasoning : This is because an artificial pacemaker is capable of stimulating the heart electrically to maintain its beats.

Read the assertion and reason carefully to mark the correct option out of the options given below: (a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion (c) If the assertion is true but the reason is false (d) If both the assertion and reason are false (e) If the assertion is false but reason is true Assertion : An artifical pacemaker can replace the sinoatrial node of heart. Reason : This is because, an artifical pacemaker is capable of stimulating the heart electrically to maintain its beats.

a. SAN generates as action potential which stimulates atrial systole. b. ECG is an electrical representation of the graphical activity of the heart during a cardiac cycle. c. The cardiac output of a normal man will be much lesser than an athlete. d. The wall of right ventricle is much thicker than the left ventricle e. In pisces the two separate circulatory pathways are present, hence they have double circulation. f. The clsoed circulatory pattern is considered to be more advantageous than open circulatory pattern. g. Glucose is absorbed by simple diffusion through lymph in lacteales present in the intestinal villi. h. The SAN can generate the maximum number of action potential i.e. 140-150 mi n^(-1) in neonates, and is responsible for initiation and maintenance of the rhythmic contractile activity of the heart. i. Angina can occur in any age but more common among the neonates and infants. j. heart failure is sometimes called congestive heart failure because congestion of the blood vessels is one of the main symptoms of this disease.

ERRORLESS -BODY FLUIDS AND CIRCULATION-Body Fluids And Circulation
  1. The volume of blood that enters into the aorta with each ventricular ...

    Text Solution

    |

  2. Epinephrine is secreted by

    Text Solution

    |

  3. Heart beat can be initiated by The cardiac pacemaker in a patient f...

    Text Solution

    |

  4. The other term for heart attack is

    Text Solution

    |

  5. Read the statements regarding the cardiac system and choose the right...

    Text Solution

    |

  6. Oxygenated blood is carried by Blood vessels carrying blood from lun...

    Text Solution

    |

  7. Purkinje's fibres are special types of

    Text Solution

    |

  8. The tricuspid valve is present at the origin of

    Text Solution

    |

  9. The atrio-ventricular valves of the heart is prevented from turning in...

    Text Solution

    |

  10. The pericardium and the pericardial fluid help in

    Text Solution

    |

  11. The thread like tendons of papillary nuscles inserted upon the flaps o...

    Text Solution

    |

  12. Blood leaving liver and moving to the heart has usually high concentra...

    Text Solution

    |

  13. Circulatroy system does not help in

    Text Solution

    |

  14. The volume of blood each ventricle pumps out during a cardiac cycle is...

    Text Solution

    |

  15. Which one of the statement is correct with reference to the circulatio...

    Text Solution

    |

  16. The typical Lubb-Dup sounds heard in the heart beat of a healthy perso...

    Text Solution

    |

  17. In order for the blood to flow right atrium to left ventricle in mamma...

    Text Solution

    |

  18. Pace maker (S.A. Node) of the heart is situated

    Text Solution

    |

  19. During systole

    Text Solution

    |

  20. Right auricle of mammalian heart receive blood from

    Text Solution

    |