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Muscles of the Pectoral Region & Axilla
Origin, Insertion, Innervation, & Action
12
Anatomy
Professional
08/23/2009

Additional Anatomy Flashcards

 


 

Cards

Term

Pectoralis Major

 

(origin and insertion)

Definition

Origin: medial half of clavicle; manubrium and body of sternum; upper six costal cartilages

 

Insertion: lateral lip of the intertubercular sulcus of the humerus

Term

Pectoralis Major

 

(innervation)

Definition
Lateral and Medial Pectoral nerves
Term

Pectoralis Major

 

(action)

Definition
flexes, adducts, and medially rotates arm
Term

Pectoralis Minor

 

(origin and insertion)

Definition

Origin: third, fourth, and fifth ribs

 

Insertion: coracoid process of the scapula

Term

Pectoralis Minor

 

(innervation)

Definition
medial (and lateral) pectoral nerve(s)
Term

Pectoralis Minor

 

(action)

Definition
depresses scapula; elevates ribs
Term

Subclavius Muscle

 

(origin and insertion)

Definition

Origin: junction of first rib and costal cartilage

 

Insertion: inferior surface of clavicle

Term

Subclavius Muscle

 

(innervation)

Definition
Nerve to subclavius
Term

Subclavius Muscle

 

(action)

Definition
depresses lateral part of the clavicle
Term

Serratus Anterior Muscle

 

(origin and insertion)

Definition

Origin: upper eight ribs

 

Insertion: medial border of the scapula

Term

Serratus Anterior Muscle

 

(Innervation)

Definition
Long thoracic nerve
Term

Serratus Anterior Muscle

 

(action)

Definition
rotates scapula upward; abducts scapula with arm and elevates it above horizontal
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