Muscles That Move The Pecroral Gridle

Question 0

Rhomboid

Answer 0

Origin: spines of upper thoracic vertebra
Insertion: medial border of scapula

Action: raises and adducts scapula

Question 1

Trapezius

Answer 1

Origin: occipital bone and spines of cervical and thoracic vertebra
Insertion: clavicle; spine and acromion process of scapula

Action: rotates scapular and raises arm; raises scapula; pulls scapula medially or pills scapula and shoulder down

Question 2

Levator scapulae

Answer 2

Origin: transverse processes of cervical vertebrae
Insertion: medial margin of scapula

Action: elevates scapula

Question 3

Serratus anterior

Answer 3

Origin: outer surfaces of upper ribs
Insertion: ventral surface of scapula

Action:pulls scapula anteriorly and down

Question 4

Pectoralis minor

Answer 4

Origin: sternal ends if upper ribs
Insertion: caracoid process of scapula

Action: pulls scapula anteriorly and den or raises ribs