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  • The cardiac centres of the body are placed in the  Option: 1 Pons of the brain &nbsp

The cardiac centres of the body are placed in the

 

Option: 1

Pons of the brain

 


Option: 2

Medulla oblongata of the brain

 


Option: 3

Forebrain

 


Option: 4

Spine 

 


Answers (1)

 

 

As we have leant:

Heartbeat & Its Regulation -

  • Heartbeat refers to the rhythmic contraction and relaxation of the heart
  • Each heart beat includes one systole and one diastole of the heart to distribute and receive blood to and from the body

Neural regulation 

  • The cardiac centres of the body are placed in the medulla oblongata of the brain
  • It is formed of 2 parts i.e. cardio-inhibitor and cardiac-accelerator 
  • Cardio-inhibiting  part reduces the rate of heart beat while cardio-accelerating part increases the rate of heart beat
  • Cardio inhibitor is connected to the heart with the help of vagus nerve
  • Cardio accelerator is connected to the heart via sympathetic nerve fibres.
  • There are Sensory fibres that extend from the receptors (in the superior vena cava, aorta, and carotid sinuses)  to the cardiovascular centres in the medulla oblongata
  • The impulses from aorta and carotid sinus decrease the heart rate 
  • The impulses from vena cava increase the heart rate.
  •  

-

 

So, 

The cardiac centres of the body are placed in the medulla oblongata of the brain. Hence, the correct answer is option b.

Posted by

Ramraj Saini

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