Question

Which of the following statement is correct regarding neural regulation of cardiac activity?

• A. The cardiac centre lies in medulla oblongata of brain
• B. Sympathetic nerve fibres accelerate the rate of heart beat and parasympathetic nerve fibres retard the rate of heart beat
• C. Sensory fibres extend from the receptors present in the walls of aortic arch, carotid sinuses and vena cava to the cardiovascular centre in medulla oblongata
• D. All of these

Answer 1

Answer: (D)

Correct answer is (d) All of these