Layer 4 of pectoral region - Layer of superficial muscles  

These layers are imaginary based on dissections of the pectoral region. This layer contains the following


DIGITAL LOCATOR OF PECTORAL REGION: Layer 1 Layer of skin of pectoral region. Layer 2 Layer of superficial fascia of pectoral region. Layer 3 Layer of pectoral (deep) fascia. Layer 4 Layer of superficial layer of muscles. Layer 5 Layer of intermediate layer of muscles. Layer 6 Layer of deep layer of muscles. Layer 7 Layer of layer of joints of pectoral region. Layer 8 Rotate layer of bones of pectoral girdle/region. Rollover mouse to label; click to display page.


Layer 4
Superficial layer of muscles contains

1 Trapezius

2 Thoracoacromial artery

3 Clavipectoral fascia

4 Pectoralis minor and fascia

5 Serratus anterior  

6 Thoracodorsal nerve

7 Ulnar nerve

8 Brachial artery

9 Cut part of pectoralis major

10 Head of humerus

11 Long head of biceps brachii tendon

12 Cut and reflected distal end of pectoralis minor

13 Median nerve

14 Medial cutaneous nerve of forearm

15 Biceps brachii belly

16 Clavicle

17 Deltoid (cut)

Brachial plexus  

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Creator: Oluwole Ogunranti

Pectoral region video     Pectoral layers  links    Electronic dissector    Structure locator

Layer 4 of pectoral locator- Skin of pectoral region. Rollover mouse to label

Pectoral dissection video




Lymphatic drainage
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Pectoral girdle

Shoulder joint
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