Kin. Muscles on the Shoulder Girdle
actions of serratus anterior muscle?
Rotates scapula upward and laterally. Protracts scapula and elevates ribs when the scapula is fixed. http://o.quizlet.com/i/ZnsJ5wipW1wU1f9J-e3OBQ_m.jpg
origin for pectoralis minor?
anterior surfaces of sternal ends of rib s3-5
actions of pectoralis minor?
depresses and protracts scapula. Elevates ribs 3-5 when scapula is fixed
actions of levator scapulae?
elevates scapula and slightly rotates it inferiorly
insertion for rhomboid minor?
medial border of scapula (superior to spine)
insertion for serratus anterior muscele?
vertebral border of inferior angle of scapula
nerve supply to rhomboid major and rhomboid minor?
dorsal scapular nerve (C5)
nerve supply to levator scapulae?
dorsal scapular nerve (C5) and C3-C5
actions of rhomboid major and rhomboid minor?
retracts and elevates medial border of scapula while downwardly rotates the lateral angle
origin for levator scapulae ?
transverse processes of C1-C4
insertion for pectoralis minor?
coracoid process of scapula
origin for rhomboid minor?
spinous processes of C7-T1
origins for trapezius?
superior nuchal line, ligamentum nuchae, spinous processes of (C1-T12)
insertion for rhomboid major?
vertebral border of scapula (inferior to spine)
Insertion of Subclavius
Clavicle
Origin of Subclavius
First Rib
actions of upper fibres of trapezius ?
elevate and upwardly rotate scapula, extend neck
nerve supply to pectoralis minor?
medial pectoral nerve
origin for rhomboid major?
spinous processes of T2-T5
insertion for levator scapulae?
Superior angle of scapula
nerve supply to trapezius?
C3, C4 and Accessory (XI) Cranial nerve
Action of Subclavius
Depresses Clavicle
Innervation of Subclavius
Nerve to Subclavius
actions of middle fibres of trapezius?
adduct (retract) scapula
Origin for serratus anterior muscle?
anterior surfaces of 1st 8 or 9 ribs
actions of lower fibres of trapezius?
depress and help upper fibres to upwardly rotate scapula
insertion of trapezius?
lateral clavicle, acromion process and spine of scapula
nerve supply for serratus anterior muscle?
long thoracic nerve
