Question

If all nerves to the heart were cut, the heart would beat at about 100 beats per minute. At rest, most people have heart rates significantly lower. From this information you know that

Select one:

a. Heart rate is primarily controlled by hormones rather than the nervous system

b. At rest, parasympathetic stimulation of the heart is greater than sympathetic

c. There is somatic innervation of the heart

d. At rest, sympathetic innervation of the heart is greater than parasympathetic

Answer 1

Answer: (b) At rest, parasympathetic stimulation of the heart is greater than sympathetic

Rationale: Our heart is controlled by the nervous system, there are two nervous system in our body.

They are ;

sympathetic nervous system

parasympathetic nervous system

But in that during night(sleep) or when the human body in rest, one nervous system which slow down the heart rate when compare to normal time. This nervous system is called as parasympathetic nervous system.

sympathetic nervous system helps to increase the heart it will not slow down the heart rate.