Axial Skeleton is the “ blue ” Appendicular Skeleton is the “ purple ”
Axial Skeleton The axial skeleton is composed of the skull , vertebral column , and thoracic cage . Each of these is essentially a “shaped box” which house and protect the most vital and vulnerable organs of the human body , such as the brain, spinal cord, and the heart, lungs, and kidneys.
The Skull – consists of 29 bones and can be subdivided into five areas: Part One
The Cranium (a.k.a. the “braincase”) The cranium consists of eight (8) bones and is specifically defined as the rounded, bony case enclosing and protecting the brain . The cranium also functions as an attachment surface for important groups of muscles , and in the formation of the sinuses , which serve as resonance chambers and help to reduce the total weight of the skull .
The facial bones consist of 14 bones that compose what is known as the human face. Along with the cranial bones, they help to form the nasal cavity and also provide numerous attachment sites for important muscles that control facial expressions and move the jaw.