Doctor_Shovan مهمان اشتراک گذاری ارسال شده در 9 خرداد، ۱۳۸۹ Brain and Cervical Spinal Cord A rear view of the skull reveals the brain and the cervical spinal cord, which function together as the central nervous system. The remarkable apparatus uses motor neurons to control the body's many muscles and enables humans to perform myriad physical activities لینک به دیدگاه
Doctor_Shovan مهمان اشتراک گذاری ارسال شده در 9 خرداد، ۱۳۸۹ Human Brain The human brain is a 3-pound (1.4-kilogram) mass of jelly-like fats and tissues—yet it's the most complex of all known living structures. Up to one trillion nerve cells work together and coordinate the physical actions and mental processes that set humans apart from other species لینک به دیدگاه
Doctor_Shovan مهمان اشتراک گذاری ارسال شده در 9 خرداد، ۱۳۸۹ Brain's Neural Pathways The human brain may contain up to one trillion neurons. These nerve cells are interconnected, as shown in this microscopic image, so that they can transmit electrical impulses—and information—to other cells لینک به دیدگاه
Doctor_Shovan مهمان اشتراک گذاری ارسال شده در 9 خرداد، ۱۳۸۹ Slice of Human Brain Thanks to precision cutting techniques, researchers are able to examine a paper-thin slice of human brain. Surgeons can also cut living brains without fear of hurting their patients—the organ is incapable of feeling pain لینک به دیدگاه
Doctor_Shovan مهمان اشتراک گذاری ارسال شده در 9 خرداد، ۱۳۸۹ Brain Tumor Removal Skillful surgeons at UCLA Medical Center in Los Angeles, California, remove a tumor from a woman's brain. Malignant tumors indicate often lethal brain conditions, but even nonmalignant growths can preempt normal brain activity. Any tumor may compress regions of the brain and increase internal pressure, upsetting the organ's delicate functional balance لینک به دیدگاه
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