Stroke Type

A stroke results from any disease process that disrupts vascular blood flow to a distinct region of the brain. Injury in stroke occurs from (1) ischemia due to vessel occlusion, which deprives neurons of needed oxygen and substrate; or (2) hemorrhage due to vessel rupture, with resultant injury by direct cellular trauma, mass effect, elevated intracranial pressure, and/or the release of deleterious biochemical substances. From 80 to 85 percent of all strokes are ischemic, whereas 15 to 20 percent are hemorrhagic.

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Essentials of Human Physiology

Essentials of Human Physiology

This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.

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