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Bassett Collection of Stereoscopic Images of Human Anatomy

Dissection of breast and anterolateral thoracic wall

External intercostal muscles viewed from left

Image #115-3

KEYWORDS: Bones joints cartilage, Muscles and tendons, Rib cage.

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Stanford holds the copyright to the David L. Bassett anatomical images and has assigned Creative Commons license Attribution-Share Alike 4.0 International to all of the images.

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For additional information regarding use and permissions, please contact Dr. Drew Bourn at dbourn@stanford.edu.

Dissection of breast and anterolateral thoracic wall
External intercostal muscles viewed from left
The left upper limb has been detached from the specimen.
1 . Rib I
2 . External intercostal muscle
3 . Pectoralis minor muscle (cut across near origin)
4 . Pectoralis major muscle (abdominal part, cut off near origin)
5 . External abdominal oblique muscle (cut off)
6 . Rib VIII (pointer on costochondral junction)
7 . Posterior scalene muscle
8 . Serratus anterior muscle (upper part, cut across)
9 . Trapezius muscle right
10 . Serratus anterior muscle middle part, cut across)
11 . Rib VI
12 . Serratus anterior muscle (lower part, cut across)
13 . Serratus posterior inferior muscle (cut across at insertions)
14 . Erector spinae muscle
15 . Rib XII