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Clinical Investigation

Frank, a 72-year-old man, is brought to the hospital by his wife. As he leans on her for support, she explains to the doctor that her husband has suddenly become partially paralyzed and has difficulty speaking. During a neurological exam, the doctor determines that Frank is paralyzed on the right side of his body, but despite this, the doctor is able to elicit a knee-jerk reflex. Frank doesn't voluntarily speak to the doctor, and when questioned, he answers slowly and with great difficulty. His answers, however, are coherent.

Magnetic resonance imaging (MRI) of his brain reveals a blockage of blood flow in the middle cerebral artery. What might explain Frank's symptoms?

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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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