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Intertransversarii musclesjpg
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Intertransversarii muscles
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The are small
Muscle s placed between the transverse processes of the
Vertebræ .
In the cervical region they are best developed, consisting of rounded muscular and tendinous
Fasciculi , and are placed in pairs, passing between the anterior and the posterior
Tubercle s respectively of the transverse processes of two contiguous vertebræ, and separated from one another by an anterior primary division of the
Cervical Nerve , which lies in the groove between them.
The muscles connecting the anterior tubercles are termed the
Intertransversarii Anteriores ; those between the posterior tubercles, the Intertransversarii posteriores; both sets are supplied by the anterior divisions of the
Spinal Nerve s. There are seven pairs of these muscles, the first pair being between the
Atlas and
Axis , and the last pair between the seventh cervical and first
Thoracic Vertebræ .
In the thoracic region they are present between the transverse processes of the lower three thoracic vertebræ, and between the transverse processes of the last thoracic and the first
Lumbar .
In the lumbar region they are arranged in pairs, on either side of the vertebral column, one set occupying the entire interspace between the transverse processes of the lumbar vertebræ, the Intertransversarii laterales; the other set,
Intertransversarii Mediale s, passing from the accessory process of one vertebra to the
Mammillary of the vertebra below.
The Intertransversarii laterales are supplied by the anterior divisions, and the Intertransversarii mediales by the posterior divisions of the spinal nerves.
