Why Is It Difficult to Get a Clear Evolutionary Picture

question 26

Short Answer

Why is it difficult to get a clear evolutionary picture of Middle Pleistocene hominins?

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Definitions:

Endocrine System

The body’s “slow” chemical communication system; a set of glands that secrete hormones into the bloodstream.

Nervous System

The network of nerve cells and fibers that transmits nerve impulses between parts of the body, facilitating communication and response to external and internal stimuli.

Receptors

Proteins located on the surface of cells or within cells that bind to specific substances and trigger a response in the cell.

Oxytocin

A hormone often associated with bonding, love, and social connection, playing a key role in human relationships.