Table of Contents
What is the origin of levator scapulae?
Origin. The levator scapulae originates on the posterior tubercle of transverse process of cervical vertebrae 1 to 4.
What is the origin and insertion of levator scapulae?
The levator scapulae originates from the posterior tubercle of the transverse process of cervical vertebrae one to four. The muscle is inserted into medial border of the scapula extending from superior angle to junction of spine and medial border of scapula.
What is the origin of the levator scapulae quizlet?
The origin of the levator scapulae muscle is the spinous processes of the seventh cervical and first five thoracic vertebrae. The levator scapulae muscle inserts on the medial border of the scapula from the superior angle to the scapular spine.
What is the origin and insertion of trapezius?
It originates on the occipital bone, the ligamentum nuchae, and the spinous processes of T01–T12. The trapezius inserts on the lateral third of the clavicle, as well as the acromion and scapular spine of the scapula.
What action is caused by the levator scapula muscle quizlet?
elevate the scapula, lateral flesion of the cervical spine, extension of the cervical spine, and rotates the scapula to depress the glenoid cavity.
Which of the following actions is performed concentrically by the levator scapulae muscle?
The levator scapulae muscle is responsible for an upward rotation of the inferior angle of the scapula.
What joint does the trapezius move?
It moves the scapula and supports the arm. The trapezius has three functional parts: an upper (descending) part which supports the weight of the arm; a middle region (transverse), which retracts the scapula; and a lower (ascending) part which medially rotates and depresses the scapula.
Where does the levator scapulae originate in the spine?
Levator scapulae originates from the transverse processes of the first four cervical vertebrae. The muscle fibers descend laterally to insert at the superior angle and medial border of scapula, between the superior angle and base of the spine of scapula.
Where does the superior third of the scapula lie?
The superior third of the strap-like levator scapulae lies deep to the sternocleidomastoid while the inferior third is deep to the trapezius. From the transverse processes of the upper cervical vertebrae, the fibers of the levator of the scapula pass inferiorly to the superomedial border of the scapula.
What are the symptoms of paralysis of the levator scapulae?
An isolated lesion of the dorsal scapular nerve with a consequent paralysis of the levator scapulae muscle is very rare. The symptoms include “winging” of the scapula (scapula alata), as well as atrophy of both the levator scapulae and rhomboid muscles.