Deltoid Anatomy: Origin, Insertion & Action

⭐ Deltoid muscle anatomy ⭐
💪 Anterior head origin: Lateral third of the clavicle
💪 Lateral head origin: Acromion
💪 Posterior head origin: Spine of scapula
💪 Insertion: Deltoid tuberosity of humerus
💪 Actions: Shoulder flexion, shoulder extension, shoulder abduction, medial & lateral rotation of arm
💪 Innervation: Axillary nerve
💪 Artery: Thoracoacromial artery, anterior and posterior humeral circumflex artery

Chapters:
0:00- Intro
0:16 - Anterior deltoid location
0:22 - Lateral deltoid location
0:25 - Posterior deltoid location
0:27 - What is the medial head of deltoid?
0:49 - Anterior deltoid origin
0:58 - Lateral deltoid origin
1:03 - Posterior deltoid origin
1:10 - Deltoid insertion
1:27 - Deltoid muscle actions overview
1:50 - Anterior deltoid actions
2:24 - Lateral deltoid actions
2:43 - Posterior deltoid actions
3:23 - Outro
3:37 - Deltoid origin, insertion & action overview image

⭐ More details about the deltoid muscle can be found at:

#BodyworksPrime #Anatomy #Deltoid #Shoulder

[adomasjasiukenas]

People nowadays talk a lot about training a muscle with the line of fibers of that particular muscle. If posterior deltoid extends the humerus and it’s fibers run diagonally should we train that extension diagonally and not straight bet to get most of it? Thanks!