3.2: Introduction

Essentials of Physiology for Nurse Anesthetists (Gopalan) · LibreTexts

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    From LibreTexts, under CC BY-NC-SA 4.0, as the source states it; its equations are written in TeX, which the PDF shows typeset. This page at LibreTexts.

    The central nervous system (CNS) comprises two major components: the brain and the spinal cord. Neurons within the CNS are highly active and demand substantial energy resources as part of their communication functions. Unlike other cells, neurons do not store glucose and rely on a continuous blood supply to generate ATP. Insufficient oxygen supply to the CNS can have severe consequences, prompting the cardiovascular system to employ specific regulatory reflexes that safeguard uninterrupted blood flow to the brain.

    This page titled 3.2: Introduction was last modified on Sun, 06 Sep 2026 15:27:22 GMT and is shared under a CC BY-NC-SA 4.0 license and was authored, remixed, and/or curated by Chaya Gopalan (Consortium of Academic and Research Libraries in Illinois (CARLI)) .