anatomy Ch16h - Human Anatomy McKinley & O'Loughlin...

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Human Anatomy Chapter 16: The Spinal Cord and Spinal Nerves The Spinal Cord Gross Anatomy of the Spinal Cord Structure of the Spinal Cord o Viewed in cross section, it is roughly cylindrical o Its external surface has two longitudinal depressions the posterior (or dorsal) median sulcus the anterior (or ventral) median fissure Regions of the Spinal Cord o The cervical region o The thoracic region o The lumbar region o The sacral region o The coccygeal region Structure of the Spinal Cord o The conus medullaris o The cauda equina The filum terminale Structure of the Spinal Cord
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o The spinal cord is associated with 31 pairs of spinal nerves that connect the CNS to muscles, receptors, and glands. o Each side of the spinal cord contains: 8 cervical nerves (called C1–C8) 12 thoracic nerves (T1–T12) 5 lumbar nerves (L1–L5) 5 sacral nerves (S1–S5) 1 coccygeal nerve (Co) Spinal Cord Meninges Arrangement and Functions of the Spinal Meninges
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anatomy Ch16h - Human Anatomy McKinley & O'Loughlin...

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