The Physical Change with the Most Significant Impact on Humans

question 40

Short Answer

The physical change with the most significant impact on humans during the Paleolithic was their ____________________.

---

Definitions:

AV Node

The atrioventricular node, a part of the heart's electrical control system that acts as a gatekeeper for electrical impulses between the atria and ventricles.

Parasympathetic Nerve

Nerves that are part of the autonomic nervous system, responsible for conserving energy and slowing down bodily functions.

Sympathetic Nerve

Part of the autonomic nervous system that prepares the body for stress-related activities, often described as the "fight or flight" response.

Potassium Ions

Charged particles of potassium that are essential for various physiological processes in the body, including nerve signal transmission and muscle contraction.