Examlex
Historians usually study the past through written sources.Which period does this limit them to?
Glial Cell
Non-neuronal cells in the central nervous system and peripheral nervous system that support and maintain neurons.
Organ System
A group of organs in a living organism that work together to perform a specific function or set of functions.
Nervous System
A complex network of nerve cells and fibers that transmits nerve impulses between parts of the body, facilitating response to stimuli.
Cardiovascular System
The closed circulatory system of vertebrates that transports oxygen, nutrients, hormones, and other substances, and protects the body against disease; consists of heart and blood vessels.
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