Hi there!
We are here with some new anatomical schemes and the comments from our anatomy teacher:
"An excess of subcutaneous fat can not only soften the contours of anatomical areas but also alter their structure to some extent. For example, this type of abdominal muscles (lower-lateral portions), supplemented by corresponding fat pads, partially overlap the vertical lines of the erector spinae muscles, visually interrupting their movement in the lumbar region. The contrapposto and slight twist of the torso further emphasize this effect.
Skin folds that appear on the body typically correspond to the boundaries of anatomical zones. Well-developed muscles can also significantly influence the basic structure. In this model, the erector spinae muscles are most clearly visible in the lumbar region but disappear under the highly developed latissimus dorsi and trapezius muscles in the upper back. This is a very characteristic feature of an athletic body type.
Movements of the shoulder girdle can greatly affect the shape and structure of the back. For example, in this case, the right scapula slides
along with the arm, moving away from the spine, thereby 'revealing' a larger portion of the right side of the chest. Conversely, the left arm is pulled back, and with this movement, the scapula always moves closer to the spine, forming characteristic folds and significantly reducing the visible part of the chest area."