Which of the following is NOT correctly matched-Cardiac centres - Cardiovagal and Vasomotor-Baroreceptors - Present in aorta and carotid-Positive Inotropic action - Increases the firing rate of Sinoatrial node-Negative Chronotropic effect - Increases the force of contraction of heart-

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Cardiac Regulation

Which of the ...

Question

Which of the following is NOT correctly matched?

Cardiac centres - Cardiovagal and Vasomotor

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Baroreceptors - Present in aorta and carotid

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Positive Inotropic action - Increases the firing rate of Sinoatrial node

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Negative Chronotropic effect - Increases the force of contraction of heart

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Solution

The correct option is D
Negative Chronotropic effect - Increases the force of contraction of heart

The cardiac centres are of two types: cardiovagal and the vasomotor. Baroreceptors are sensors located in the blood vessels of all vertebrate animals. They sense the blood pressure and relay the information to the brain, so that a proper blood pressure can be maintained. An inotropic action alters the force or energy of muscular contraction.Change in contractility or force of contraction of the heart is also known as a chronotropic effect. Positive chronotropes increase heart rate; negative chronotropes decrease heart rate.

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