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Muscular Anatomy
Muscles of Pectoral Girdle
16
Anatomy
Undergraduate 1
04/09/2016

Additional Anatomy Flashcards

 


 

Cards

Term

 

 

Pectoralis major

 

Origin

Definition

 

 

Clavicular head: medial half of clavicle.

 

Sternal head: sternum, cartilages of upper six ribs.

Term

 

 

Pectoralis major

 

Insertion

Definition

 

 

Lateral lip of bicipital groove of humerus.

Term

 

 

Pectoralis major

 

Action

Definition

 

 

Adduction, horizontal adduction and medial rotation of humerus.

 

The pectoralis major also assists in other humeral movement.

Term

 

 

Pectoralis major

 

Palpation

Definition

 

 

Along anterior border of axilla.

Term

 

 

Pectoralis major

 

Innervation

Definition

 

 

Clavicular head: lateral pectoral nerve (C5, 6, 7).

 

Sternal head:  medial pectoral nerve (C8, T1)

Term

 

 

Pectoralis minor

 

Origin

Definition

 

 

Anterior 3, 4, 5 ribs.

Term

 

 

Pectoralis minor

 

Insertion

Definition

 

 

Coracoid process of scapula

Term

 

 

Pectoralis minor

 

Action

Definition

 

 

Protraction (abducts) depression, downward ratation of scapula

Term

 

 

Pectoralis minor

 

Palpation

Definition

 

 

 

Difficult to palpate.

Term

 

 

Pectoralis minor

 

Innervation

Definition

 

 

Medial pectoral nerve (C8, T1)

Term

 

 

Pectoralis minor

Definition

 

 

The pectoralis minor forms a bridge over the brachial plexus of vessels of the arm.

Term

 

 

Subclavius

 

Origin

Definition

 

 

First Rib.

Term

 

 

Subclavius

 

Insertion

Definition

 

 

Inferior shaft of clavicle

Term

 

 

Subclavius

 

Action

Definition

 

 

Stabilises the clavicle

Term

 

 

Subclavius

 

Palpation

Definition

 

 

Cannot palpate.

Term

 

 

Subclavius

 

Innervation

Definition

 

 

Nerve to subclavius (C5, 6)

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