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Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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The spinal cord is a slender column of nervous tissue that starts from the brain and passes down into the vertebral canal. The spinal cord is divided into cervical, thoracic, lumbar, and sacral regions covering all the parts of the body for control and coordination. The spinal cord consists of thirty-one pairs of nerves,8 cervical (C1–C8), 12 thoracic (T1–T12), 5 lumbar (L1–L5), 5 sacral (S1–S5), and 1 coccygeal (Co1). These nerves branch out of the cord and spread to various body parts connecting them with the central nervous system.

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