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Levator scapulae forms part of the latter group together with rhomboid major, rhomboid minor, serratus anterior, and trapezius. The trapezius evolved separately, but the other three muscles in this group evolved from the first eight or ten ribs and the transverse processes of the cervical vertebrae (homologous to the ribs).
Origin: Transverse processes of C7 to T11 vertebrae: Insertion: Superior surfaces of the ribs immediately inferior to the preceding vertebrae: Nerve: Dorsal rami C8-T11 (Intercostal nerves) Actions: Assists in elevation of the thoracic rib cage: Identifiers; Latin: musculi levatores costarum: TA98: A04.4.01.009: TA2: 2308: FMA: 71312 ...
Origin The bone or other structure the muscle is attached to that remains immobile during the action. The term "bone" is omitted from bone names. Insertion The attachment point of the muscle, on a bone or otherwise, that moves during the action. Artery The artery which supplies the muscle with blood.
Together with the rhomboid major, the rhomboid minor retracts the scapula when trapezius is contracted. Acting as a synergist to the trapezius, the rhomboid major and minor elevate the medial border of the scapula medially and upward, working in tandem with the levator scapulae muscle to rotate the scapulae downward. While other shoulder ...
If both scapulae are protracted, the scapulae are separated and the pectoralis major muscles are squeezed together. [11] serratus anterior (prime mover), pectoralis minor and major Scapular elevation [12] The scapula is raised in a shrugging motion. levator scapulae, the upper fibers of the trapezius Scapular depression [12]
Origin: Nuchal ligaments, spinous processes of the C7-to-T5 vertebrae: Insertion: Medial border of the scapula: Artery: Dorsal scapular artery: Nerve: Dorsal scapular nerve: Actions: Pulls scapulae medially, rotates scapulae, holds scapulae into thorax wall: Identifiers; Latin: musculi rhomboidei: Anatomical terms of muscle
Serratus anterior forms part of the latter group together with rhomboid major, rhomboid minor, levator scapulae, and trapezius. The trapezius evolved separately, but the other three muscles in this group evolved from the first eight or ten ribs and the transverse processes of the cervical vertebrae (homologous to the ribs).
elevation of the scapula at the shoulders (e.g. shrugging shoulders) include: Levator scapulae muscle; Rhomboid major muscle and Rhomboid minor muscle; Trapezius muscle; elevation of the ribs. Pectoralis minor muscle; Scalene muscles; mandible. Medial pterygoid muscle; upper lip. Levator labii superioris; upper lip and wing of nose