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IthinkIllthink t1_jd9p9r3 wrote

Reply to comment by Jfrog1 in (Biology) How far down your spine can you break before respiratory impairment? by Anomaly-Friend

The heart has “pacemaker cells” that make it beat/contract without any nerve input. Look up pacemaker cells.

The ANS speeds up or slows down the heart rate.

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Jfrog1 t1_jd9q4za wrote

if you put a bullet through the medulla oblongata/brain stem, the heart stops, this is simple stuff, does it happen immediately, no, as electrical impulses are still working, but your concept that the heart controls itself is so basic and unfounded, I am amazed you made it through high school biology

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IthinkIllthink t1_jd9qty1 wrote

Perhaps that’s from the trauma of the gun shot.

Look at a video of the transport or removal of a human heart for a heart transplant. It is beating without any nerve input.

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