Interactive Functional Anatomy software
Torso/Neck:  Trunk and arm view

Layer 1

• Coccyx
• Sacrum
• Lumbar vertebrae 1-5
• Thoracic vertebrae 1-12
• Ribs
• Parts of the lumbar vertebra
• Spinous process
• Transverse process
• Inferior articular process (facets)
• Superior articular process (facets)
• Body

Layer 3

• Intervertebral discs
• Sternum
• Costal cartilage

Layer 5

• Intercostals
• Rotatores (deep posteriors)

Layer 6

• Quadratus Lumborum
• Multifidus (deep posteriors)

Layer 7

• Transverse Abdominus (Transversalis)
• Semispinalis (thoracis & cervicis)

Layer 9

• Psoas Major
• Erector Spinae

Layer 10

• Rectus Abdominus
• Pyramidalis

Layer 12

• Internal Oblique

Layer 13

• External Oblique

Torso/Neck:  Head and neck view

Layer 1

• Cervical vertebrae 1-7

Layer 3

• Atlas (1st cervical vertebra)
• Axis (2nd cervical vertebra)

Layer 7

• Scalenus posterior

Layer 8

• Scalenus medius
• Semispinalis (capitus)

Layer 9

• Scalenus anterior

Layer 10

• Splenius capitis
• Splenius cervicis

Layer 13

• Sternocleidomastoid