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Section of the neck at about the level of the sixth cervical vertebra Showing the arrangement of the fascia coli (Semispinalis colli and capitis visible at bottom right)
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Deep muscles of the back
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The is a
Muscle of the
Human Body . It is divided into three parts.
The consists of thin, narrow, fleshy
Fasciculi , interposed between tendons of considerable length.
It arises by a series of small tendons from the transverse processes of the sixth to the tenth
Thoracic Vertebræ , and is inserted, by tendons, into the spinous processes of the upper four thoracic and lower two cervical vertebræ.
The ('''Semispinalis colli'''), thicker than the preceding, arises by a series of tendinous and fleshy fibers from the transverse processes of the upper five or six
Thoracic Vertebræ , and is inserted into the cervical spinous processes, from the axis to the fifth inclusive.
The fasciculus connected with the axis is the largest, and is chiefly muscular in structure.
The ('''Complexus''') is situated at the upper and back part of the
Neck , beneath the
Splenius , and medial to the
Longissimus Cervicis and capitis.
It arises by a series of tendons from the tips of the transverse processes of the upper six or seven thoracic and the seventh
Cervical Vertebræ , and from the articular processes of the three cervical above this.
The tendons, uniting, form a broad muscle, which passes upward, and is inserted between the superior and inferior
Nuchal Lines of the
Occipital Bone .
The medial part, usually more or less distinct from the remainder of the muscle, is frequently termed the ''Spinalis capitis''; it is also named the ''Biventer cervicis'' since it is traversed by an imperfect tendinous inscription.
