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A&P Tortora 11th ed. chap11
Muscles that move the Shoulder
10
Anatomy
Undergraduate 2
10/02/2008

Additional Anatomy Flashcards

 


 

Cards

Term

Anterior Thoracic Muscles

 

Definition

 

Subclavius

 

Pectoralis minor

 

Serratus anterior

Term

 

Posterior Thoracic Muscles

Definition

 

  1. Trapezius
  2. Levator Scapulae
  3. Rhomboid major
  4. Rhomboid minor
Term

 

Subclavius

Definition

 

Origin: First Rib

Insertion: Clavicle

Action:Depresses and moves clavicle anteriorly and helps stabilize pectoral girdle

Innervation: Subclavian nerve

Term

 

 

Pectoralis Minor

Definition

 

Origin: 2-5th rib

Insertion: Coracoid proces of scapula

Action: Abducts scapula & rotates downward;elevates 3-5th rib during forced inhalation when scapula is fixed (changing origin/insertion.

Innervation: Medial pectoral nerves

Term

 

 

Serratus Anterior

Definition

 

Origin: Superior eight or nine ribs.

Insertion: Vertebral border and inferior angle of scapula.

Action: Abducts/Rotates scapula upward; elevates ribs when scapula is stabilized; boxers muscle; abduction/protraction ...punch/hug

Innervation: Long thoracic nerve

Term

 

 

 

Trapezius

Definition

 

Origin: Superior Nuchal line (lateral to E.O.P) of occipital bone, ligamentum Nuchae, and spines of 7th Cervical and all Thoracic Vertebra.

Insertion: Clavicle, Acromion & Spine of Scapula

Action: Superior fibers=elevate scapula , Middle fibers= Adduct Scapula, Inferior fibers= depress scapula, Superior & Inferior fibers: rotate scapula up & Stabilizes.

Innervation: Accessory XI nerve and cervical spinal nerves C3-C5

Term

 

 

 

Levator Scapula

Definition

 

 

Origin: Superior 4-5 cervical vertebrae

Insertion: Superior vertebral border of scapula

Action: Elevates scapula and rotates it downward

Innervation: Dorsal scapular nerve and cervical spinal nerves C3-C5

Term

 

 

 

Rhomboid Major

Definition

 

Origin: Spines of 2nd-5th Thoracic vertebrae

Insertion: Vertebral border of scapula inferior to spine.

Action: Elevates and Adducts scapula & rotates it downward; stabilizes scapula

Innervation: Dorsal scapular nerves

 

Term

 

 

 

Rhomboid Minor

Definition

 

Origin: Spines of 7th cervical and 1st thoracic vertebrae.

Insertion: Vertebral border of scapula superior to spine.

Action: Elevates and adducts scapula, rotates downward; stabilizes scapula.

Innervation: Dorsal scapular nerve

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