Any duty or labor performed for another person. The delivery of a legal document that notifies the recipient of the commencement of a legal action or proceeding in which he or she is involved. The term service has various meanings, depending upon the context of the word.
DESCRIPTION. Scalenus anterior is one three deep muscles in the scalene group. ORIGIN. Scalenus anterior originates from the anterior tubercles of the transverse processes of the third, fourth, fifth and sixth cervical vertebrae. Cervical Spine Muscles Scalenes chiropractor 3D animation.DESCRIPTION. Scalenus medius is one three deep muscles in the scalene group. ORIGIN. Scalenus medius originates from the transverse process of the axis and the front of the posterior tubercles of the transverse processes of the lower five cervical vertebrae.ervical Spine Muscles Scalenes chiropractor 3D animation. INSERTION. Scalenus anterior inserts onto the scalene tubercle on the inner border of the first rib, and to a ridge on the upper surface of the rib, anterior to the groove for the subclavian artery.
Anatomy and supply. The scalene muscles (Latin: âladderâ) are three paired cervical muscles running from the cervical vertebrae to the upper two ribs. Hereby they form a roof over the pleura and the upper thorax. The innervation is carried by direct branches of the cervical and brachial plexuses (C3-6).auses for the Scalene syndrome may be, amongst others, a hypertrophy of the scalene muscles due to chronic overload and variations or deformities of the first rib.