⭐ Pectoralis major muscle anatomy ⭐
💪 Origins: Anterior surface & medial half of clavicle, anterior surface of sternum, superior six costal cartilages, aponeurosis of the external oblique muscle
💪 Insertion: Lateral crest of bicipital groove
💪 Actions: Humerus adduction, humerus medial rotation, humerus flexion (clavicular head), humerus extension (sternocostal head)
💪 Innervation: Medial and lateral pectoral nerves (C5-T1)
💪 Blood supply: Pectoral branch of the thoracoacromial trunk
Chapters:
0:00 - Intro
0:15 - Pectoralis major location
0:17 - Origin
1:14 - Insertion
2:01 - Muscle actions overview
2:19 - Muscle action adduction
2:35 - Muscle action internal/medial rotation
2:59 - Muscle action humeral elevation
3:18 - Muscle action humeral extension
4:25 - Outro
4:35 - Pectoralis major origin, insertion, action overview image
⭐ If you would like some help memorising this information, be sure to check out the free muscle study flashcards on bodyworksprime.com
⭐ More details about the pectoralis major muscle can be found at: [ Ссылка ]
⭐ Looking for a video on the pec minor muscle? Then check out my pectoralis minor video: [ Ссылка ]
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