Позвонок - Vertebra

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Описание

A typical vertebra consists of two essential parts: an anterior segment, the body, and a posterior part, the vertebral or neural arch; these enclose a foramen, the vertebral foramen. The vertebral arch consists of a pair of pedicles and a pair of laminæ, and supports seven processes: four articular, two transverse, and one spinous.

When the vertebræ are articulated with each other the bodies form a strong pillar for the support of the head and trunk, and the vertebral foramina constitute a canal for the protection of the medulla spinalis (spinal cord), while between every pair of vertebræ are two apertures, the intervertebral foramina, one on either side, for the transmission of the spinal nerves and vessels.


This definition incorporates text from a public domain edition of Gray's Anatomy (20th U.S. edition of Gray's Anatomy of the Human Body, published in 1918 – from http://www.bartleby.com/107/).

Анатомическая иерархия

Общая анатомия > Кости; система скелета > Осевой скелет > Позвоночный столб > Позвонок

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