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.
There are also large and small muscles which make up the back of the chest cavity. 1  The trapezius muscle is a diamond shaped back muscle extending from the base of the skull to the mid back. 2  The rhomboid muscles lie under the the trapezius muscle. 3  The teres muscles are made up of the teres major and teres minor muscles.